Operational Status

DSB Availability

2025

2024

2023

2022

2021

2020

2019

2018

2017

2025

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability	Outage in minutes	Cumulative Availability
		ISIN		UPI
June 2025	0	0	100%	0	100%
May 2025	0	0	100%	0	100%
April 2025	0	0	100%	0	100%
March 2025	0	0	100%	0	100%
February 2025	0	0	100%	0	100%
January 2025	0	0	100%	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

		ISIN Percentile Latency (MS)			UPI Percentile Latency (MS)
Month and Year	Message	50th	90th	99th	50th	90th	99th
June 2025	Record retrieval by code	16	38	275	89	139	373
	Record retrieval by attributes	64	89	181	87	199	458
	Create Requests	90	293	402	100	363	621
	Search	222	580	1495	83	395	730
May 2025	Record retrieval by code	10	35	222	9	79	333
	Record retrieval by attributes	20	75	156	90	313	509
	Create Requests	81	166	360	66	349	685
	Search	223	580	1495	90	410	808
April 2025	Record retrieval by code	8	34	84	29	62	246
	Record retrieval by attributes	18	25	56	50	369	763
	Create Requests	80	163	230	44	331	611
	Search	554	973	1398	111	440	838
March 2025	Record retrieval by code	9	36	852	23	72	415
	Record retrieval by attributes	18	25	54	50	375	587
	Create Requests	104	206	274	43	332	610
	Search	227	529	5020 ***	123	462	2967
February 2025	Record retrieval by code	9	13	68	24	63	345
	Record retrieval by attributes	18	25	56	56	386	702
	Create Requests	103	203	252	46	346	616
	Search	205	390	1335	118	465	1403
January 2025	Record retrieval by code	9	13	59	26	62	349
	Record retrieval by attributes	18	25	55	61	418	1241 **
	Create Requests	103	200	245	44	364	675
	Search	157	393	1265	118	465	1403

These DSB Latency targets apply to the ISIN and UPI services over a calendar month for Power and Search-Only API Users. Where an ISIN create requires a UPI to also be created or retrieved, then the target will take into account both operations:

* 99% of all messages for workflows related to Record retrieval by code are to be processed and delivered in 500ms.
* 99% of all messages for workflows related to Record retrieval by attributes are to be processed and delivered in 1,000ms.
* 99% of all messages for workflows related to Create Requests^ are to be processed and delivered in 1,000ms.
* 99% of all messages for workflows related to Search (wildcard search by metadata) are to be processed and delivered in 5,000ms.

^ Only applies to Power Users. Search-Only API Users do not have the ability to create.

** Open Investigation Ticket DSB-5162 UPI Record retrieval by attributes 99th percentile high latency

*** Incident ticket ADSB-41005 ISIN Search 99th percentile high latency due to an issue with the utilization of one of the DSB web servers. Resolved 30th March 2025 under TCM-3254

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity	Duration	Root Cause Analysis (RCA)
1-February-2025	GUI and REST API Outage	S2	100 Minutes	Link

Classification of Incidents

Severity	Definition
CRITICAL (S1)	DSB Production Service is down or unavailable. Critical issue that severely impacts the DSB Production Service for all users. The situation halts business operations and no procedural workaround exists. Major data elements are corrupted or lost and must be restored from backup. A critical documented feature / function is not available.
MAJOR (S2)	Major Production functionality is impacted, or significant performance degradation is experienced, but is not a Critical Incident. The situation is causing a high impact to some users’ business operations and no reasonable workaround exists. DSB Production Service is operational but highly degraded performance to the point of major impact on usage. Important features of the system offering are unavailable with no acceptable workaround; however, operations can continue in a restricted fashion. Client Onboarding and Support Platform (COSP) functionality is down or unavailable for all users.
IMPORTANT (S3)	There is a partial loss of use of any client facing DSB Service (Production or UAT environments) or the COSP, with a medium-to-low impact on multiple users’ business operations, but operations continue, and is not a Critical Incident or a Major Incident. Short-term workarounds may be available as an interim solution. Outage experienced by programmatic and/or Enterprise user, in DSB Production Service, or COSP.
MINOR (S4)	Inquiry regarding a routine technical issue; information requested on DSB Service capabilities, navigation, access or configuration. Minor issue affecting a single fee-paying user. Acceptable workaround available. Also includes non-technical queries about any other aspect of the DSB Service or COSP.

2024

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2024	0	0	100%
November 2024	0	0	100%
October 2024	0	0	100%
September 2024	0	0	100%
August 2024	0	0	100%
July 2024	0	0	100%
June 2024	0	0	99.99%
May 2024	0	0	99.99%
April 2024	1	13	99.99%
March 2024	0	0	100%
February 2024	0	0	100%
January 2024	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	Identifier	Message	50th percentile latency (ms)	90th percentile latency (ms)	99th percentile latency (ms)
December 2024	ISIN	Record retrieval by ISIN code	10	13	42
	ISIN	Record retrieval by ISIN attributes	19	26	55
	ISIN	Create Requests	104	202	252
	ISIN	Search	145	387	967
	UPI	Record retrieval by UPI code	27	66	375
	UPI	Record retrieval by UPI attributes	60	426	651
	UPI	Create Requests	46	370	641
	UPI	Search	52	165	560
November 2024	ISIN	Record retrieval by ISIN code	9	15	64
	ISIN	Record retrieval by ISIN attributes	18	26	56
	ISIN	Create Requests	103	203	246
	ISIN	Search	229	495	1171
	UPI	Record retrieval by UPI code	11	54	283
	UPI	Record retrieval by UPI attributes	52	434	793
	UPI	Create Requests	22	346	641
	UPI	Search	121	519	1250
October 2024	ISIN	Record retrieval by ISIN code	9	14	46
	ISIN	Record retrieval by ISIN attributes	18	26	54
	ISIN	Create Requests	65	189	239
	ISIN	Search	219	358	979
	UPI	Record retrieval by UPI code	11	36	245
	UPI	Record retrieval by UPI attributes	48	309	558
	UPI	Create Requests	44	324	622
	UPI	Search	74	496	1499
September 2024	ISIN	Record retrieval by ISIN code	9	13	40
	ISIN	Record retrieval by ISIN attributes	18	25	56
	ISIN	Create Requests	50	100	145
	ISIN	Search	219	335	903
	UPI	Record retrieval by UPI code	10	35	140
	UPI	Record retrieval by UPI attributes	49	63	415
	UPI	Create Requests	45	322	544
	UPI	Search	120	175	618
August 2024	ISIN	Record retrieval by ISIN code	9	13	64
	ISIN	Record retrieval by ISIN attributes	24	32	60
	ISIN	Create Requests	55	129	176
	ISIN	Search	145	371	1011
	UPI	Record retrieval by UPI code	10	35	151
	UPI	Record retrieval by UPI attributes	54	65	389
	UPI	Create Requests	29	356	593
	UPI	Search	95	467	1627
July 2024	ISIN	Record retrieval by ISIN code	9	14	42
	ISIN	Record retrieval by ISIN attributes	23	31	62
	ISIN	Create Requests	56	129	177
	ISIN	Search	161	353	894
	UPI	Record retrieval by UPI code	11	44	197
	UPI	Record retrieval by UPI attributes	23	31	62
	UPI	Create Requests	56	129	177
	UPI	Search	86	469	1593
June 2024	ISIN	Record retrieval by ISIN code	9	15	94
	ISIN	Record retrieval by ISIN attributes	25	34	80
	ISIN	Create Requests	61	142	200
	ISIN	Search	176	413	1200
	UPI	Record retrieval by UPI code	8	29	116
	UPI	Record retrieval by UPI attributes	55	71	410
	UPI	Create Requests	31	370	658
	UPI	Search	95	502	1815
May 2024	ISIN	Record retrieval by ISIN code	10	16	61
	ISIN	Record retrieval by ISIN attributes	27	44	109
	ISIN	Create Requests	62	154	242
	ISIN	Search	255	648	60,117 ***
	UPI	Record retrieval by UPI code	28	65	201
	UPI	Record retrieval by UPI attributes	58	82	438
	UPI	Create Requests	53	343	574
	UPI	Search	60	367	734
April 2024	ISIN	Record retrieval by ISIN code	9	16	65
	ISIN	Record retrieval by ISIN attributes	25	36	90
	ISIN	Create Requests	65	152	230
	ISIN	Search	240	406	978
	UPI	Record retrieval by UPI code	11	71	321
	UPI	Record retrieval by UPI attributes	57	77	425
	UPI	Create Requests	54	228	561
	UPI	Search	71	392	791
March 2024	ISIN	Record retrieval by ISIN code	10	40	75
	ISIN	Record retrieval by ISIN attributes	24	34	82
	ISIN	Create Requests	60	138	203
	ISIN	Search	169	389	1051
	UPI	Record retrieval by UPI code	19	182	411
	UPI	Record retrieval by UPI attributes	34	411	1071***
	UPI	Create Requests	53	365	605
	UPI	Search	353	458	750
February 2024	ISIN	Record retrieval by ISIN code	11	45	139
	ISIN	Record retrieval by ISIN attributes	22	32	81
	ISIN	Create Requests	55	129	197
	ISIN	Search	150	393	2196
	UPI	Record retrieval by UPI code	61	231	546
	UPI	Record retrieval by UPI attributes	49	64	409
	UPI	Create Requests	30	342	556
	UPI	Search	353	421	852
January 2024	ISIN	Record retrieval by ISIN code	9	13	38
	ISIN	Record retrieval by ISIN attributes	41	80	112
	ISIN	Create Requests	75	377	557
	ISIN	Search	129	322	19953 ***
	UPI	Record retrieval by UPI code	334	358	395
	UPI	Record retrieval by UPI attributes	50	315	553
	UPI	Create Requests	52	151	521
	UPI	Search	366	487	1541

^ Only applies to Power Users. Search-Only API Users do not have the ability to create.

*** Open Investigation Ticket DSB-3343 and DSB-3266 ISIN Search 99th percentile high latency

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 1 Duration	Severity 2 Duration	RCA (Root Cause Analysis)
17-April-2024	Production Disconnect	13 min	N/A	Link

Classification of Incidents

Severity	Definition
CRITICAL (S1)	DSB Production Service is down or unavailable. Critical issue that severely impacts the DSB Production Service for all users. The situation halts business operations and no procedural workaround exists. Major data elements are corrupted or lost and must be restored from backup. A critical documented feature / function is not available.
MAJOR (S2)	Major Production functionality is impacted, or significant performance degradation is experienced, but is not a Critical Incident. The situation is causing a high impact to some users’ business operations and no reasonable workaround exists. DSB Production Service is operational but highly degraded performance to the point of major impact on usage. Important features of the system offering are unavailable with no acceptable workaround; however, operations can continue in a restricted fashion. Client Onboarding and Support Platform (COSP) functionality is down or unavailable for all users.
IMPORTANT (S3)	There is a partial loss of use of any client facing DSB Service (Production or UAT environments) or the COSP, with a medium-to-low impact on multiple users’ business operations, but operations continue, and is not a Critical Incident or a Major Incident. Short-term workarounds may be available as an interim solution. Outage experienced by programmatic and/or Enterprise user, in DSB Production Service, or COSP.
MINOR (S4)	Inquiry regarding a routine technical issue; information requested on DSB Service capabilities, navigation, access or configuration. Minor issue affecting a single fee-paying user. Acceptable workaround available. Also includes non-technical queries about any other aspect of the DSB Service or COSP.

2023

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2023	0	0	100%
November 2023	0	0	100%
October 2023	0	0	100%
September 2023	0	0	100%
August 2023	0	0	100%
July 2023	0	0	100%
June 2023	0	0	100%
May 2023	0	0	100%
April 2023	0	0	100%
March 2023	0	0	100%
February 2023	0	0	100%
January 2023	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	Identifier	Message	50th percentile latency (ms)	90th percentile latency (ms)	99th percentile latency (ms)
December 2023	ISIN	Record retrieval by ISIN code	9	22	601
	ISIN	Record retrieval by ISIN attributes	56	88	119
	ISIN	Create Requests	92	410	627
	ISIN	Search	148	524	26816***
	UPI	Record retrieval by UPI code	92	288	398
	UPI	Record retrieval by UPI attributes	75	225	933
	UPI	Create Requests	99	352	466
	UPI	Search	375	721	2236
November 2023	ISIN	Record retrieval by ISIN code	9	16	337
	ISIN	Record retrieval by ISIN attributes	51	88	121
	ISIN	Create Requests	79	399	601
	ISIN	Search	128	422	15196***
	UPI	Record retrieval by UPI code	119	405	597
	UPI	Record retrieval by UPI attributes	457	704	1054
	UPI	Create Requests	155	488	856
	UPI	Search	71	437	1066
October 2023	ISIN	Record retrieval by ISIN code	9	20	316
	ISIN	Record retrieval by ISIN attributes	36	81	113
	ISIN	Create Requests	78	312	475
	ISIN	Search	97	335	19246***
	UPI	Record retrieval by UPI code	463	602	602
	UPI	Record retrieval by UPI attributes	0	0	0
	UPI	Create Requests	340	1102	1923
	UPI	Search	81	379	381
September 2023	ISIN	Record retrieval by ISIN code	9	18	38
	ISIN	Record retrieval by ISIN attributes	28	42	65
	ISIN	Create Requests	44	125	161
	ISIN	Search	128	520	1156
August 2023	ISIN	Record retrieval by ISIN code	9	18	39
	ISIN	Record retrieval by ISIN attributes	29	43	66
	ISIN	Create Requests	44	141	431
	ISIN	Search	131	479	8565^
July 2023	ISIN	Record retrieval by ISIN code	8	19	42
	ISIN	Record retrieval by ISIN attributes	27	41	64
	ISIN	Create Requests	44	135	408
	ISIN	Search	104	385	2047
June 2023	ISIN	Record retrieval by ISIN code	9	21	41
	ISIN	Record retrieval by ISIN attributes	26	43	66
	ISIN	Create Requests	43	120	154
	ISIN	Search	107	373	1839
May 2023	ISIN	Record retrieval by ISIN code	9	18	42
	ISIN	Record retrieval by ISIN attributes	31	49	73
	ISIN	Create Requests	55	144	185
	ISIN	Search	96	292	759
April 2023	ISIN	Record retrieval by ISIN code	11	33	55
	ISIN	Record retrieval by ISIN attributes	29	46	71
	ISIN	Create Requests	45	140	181
	ISIN	Search	97	265	1254
March 2023	ISIN	Record retrieval by ISIN code	12	36	59
	ISIN	Record retrieval by ISIN attributes	31	47	71
	ISIN	Create Requests	44	147	183
	ISIN	Search	86	235	1193
February 2023	ISIN	Record retrieval by ISIN code	13	33	60
	ISIN	Record retrieval by ISIN attributes	30	45	70
	ISIN	Create Requests	51	142	174
	ISIN	Search	89	286	1428
January 2023	ISIN	Record retrieval by ISIN code	14	32	64
	ISIN	Record retrieval by ISIN attributes	36	55	88
	ISIN	Create Requests	56	161	198
	ISIN	Search	98	217	1355

The DSB Latency targets:

* 99% of all messages for workflows related to ISIN Record retrieval by ISIN code are to be processed and delivered in 500ms.
* 99% of all messages for workflows related to ISIN Record retrieval by ISIN attributes are to be processed and delivered in 1,000ms.
* 99% of all messages for workflows related to ISIN Create Requests are to be processed and delivered in 1,000ms.
* 99% of all messages for workflows related to ISIN Search (wildcard search by metadata) are to be processed and delivered in 5,000ms.

^ Performance of SOLR search component degraded due to memory issues. Resolved 3 September 2023.

*** Incident ticket ADSB-38133 ISIN Search 99th percentile high latency due to the pre-population activity that was being carried out. Resolved November 2023

** June and October 2023 ISIN Search values has been updated to reflect the correct figures due to missing data on the previous publication.

Incident Details and Root Cause Analyses

Date of Incident

Incident Name

Severity 1 Duration

Severity 2 Duration

RCA (Root Cause Analysis)

Classification of Incidents

Severity	Definition
CRITICAL (S1)	DSB Production Service is down or unavailable. Critical issue that severely impacts the DSB Production Service for all users. The situation halts business operations and no procedural workaround exists. Major data elements are corrupted or lost and must be restored from backup. A critical documented feature / function is not available.
MAJOR (S2)	Major Production functionality is impacted, or significant performance degradation is experienced, but is not a Critical Incident. The situation is causing a high impact to some users’ business operations and no reasonable workaround exists. DSB Production Service is operational but highly degraded performance to the point of major impact on usage. Important features of the system offering are unavailable with no acceptable workaround; however, operations can continue in a restricted fashion. Client Onboarding and Support Platform (COSP) functionality is down or unavailable for all users.
IMPORTANT (S3)	There is a partial loss of use of any client facing DSB Service (Production or UAT environments) or the COSP, with a medium-to-low impact on multiple users’ business operations, but operations continue, and is not a Critical Incident or a Major Incident. Short-term workarounds may be available as an interim solution. Outage experienced by programmatic and/or Enterprise user, in DSB Production Service, or COSP.
MINOR (S4)	Inquiry regarding a routine technical issue; information requested on DSB Service capabilities, navigation, access or configuration. Minor issue affecting a single fee-paying user. Acceptable workaround available. Also includes non-technical queries about any other aspect of the DSB Service or COSP.

2022

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2022	0	0	99.95%
November 2022	0	0	99.94%
October 2022	0	0	99.94%
September 2022	0	0	99.93%
August 2022	1	249	99.92%
July 2022	0	0	100%
June 2022	0	0	100%
May 2022	0	0	100%
April 2022	0	0	100%
March 2022	0	0	100%
February 2022	0	0	100%
January 2022	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	Message	50th percentile latency (ms)	90th percentile latency (ms)	99th percentile latency (ms)
December 2022	ISIN Record retrieval by ISIN code	16	31	64
	ISIN Record retrieval by ISIN attributes	38	58	90
	ISIN Create Requests	61	168	203
	ISIN Search	116	273	790
November 2022	ISIN Record retrieval by ISIN code	16	34	80
	ISIN Record retrieval by ISIN attributes	38	58	92
	ISIN Create Requests	57	167	206
	ISIN Search	84	149	510
October 2022	ISIN Record retrieval by ISIN code	17	48	79
	ISIN Record retrieval by ISIN attributes	38	59	92
	ISIN Create Requests	58	165	203
	ISIN Search	88	237	953
September 2022	ISIN Record retrieval by ISIN code	14	29	62
	ISIN Record retrieval by ISIN attributes	37	57	89
	ISIN Create Requests	58	164	201
	ISIN Search	92	203	493
August 2022	ISIN Record retrieval by ISIN code	16	36	70
	ISIN Record retrieval by ISIN attributes	38	59	91
	ISIN Create Requests	63	170	208
	ISIN Search	90	216	688
July 2022	ISIN Record retrieval by ISIN code	15	34	64
	ISIN Record retrieval by ISIN attributes	38	62	92
	ISIN Create Requests	69	169	211
	ISIN Search	83	198	958
June 2022	ISIN Record retrieval by ISIN code	15	47	152
	ISIN Record retrieval by ISIN attributes	37	63	93
	ISIN Create Requests	64	167	210
	ISIN Search	88	181	601
May 2022	ISIN Record retrieval by ISIN code	15	45	64
	ISIN Record retrieval by ISIN attributes	37	65	96
	ISIN Create Requests	76	173	222
	ISIN Search	85	202	623
April 2022	ISIN Record retrieval by ISIN code	15	43	61
	ISIN Record retrieval by ISIN attributes	37	68	100
	ISIN Create Requests	71	170	216
	ISIN Search	76	161	949
March 2022	ISIN Record retrieval by ISIN code	16	48	78
	ISIN Record retrieval by ISIN attributes	33	62	92
	ISIN Create Requests	67	165	213
	ISIN Search	60	163	485
February 2022	ISIN Record retrieval by ISIN code	17	50	97
	ISIN Record retrieval by ISIN attributes	33	62	90
	ISIN Create Requests	74	162	215
	ISIN Search	57	131	489
January 2022	ISIN Record retrieval by ISIN code	15	47	95
	ISIN Record retrieval by ISIN attributes	31	58	91
	ISIN Create Requests	85	166	384
	ISIN Search	57	149	545

The DSB Latency targets:

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 1 Duration	Severity 2 Duration	RCA (Root Cause Analysis)
9 August 2022	Outage 2022 – 01	4 hours 9 mins		View Document

Classification of Incidents

Severity	Definition
Critical (S1)	Critical production issue that severely impacts the DSB Service for all Users. The situation halts business operations and no procedural workaround exists. • DSB Service is down or unavailable. • Major data elements are corrupted or lost and must be restored from backup. • A critical documented feature / function is not available.
Major (S2)	Major functionality is impacted or significant performance degradation is experienced and is not a Critical Incident. The situation is causing a high impact to some Users’ business operations and no reasonable workaround exists. • DSB Service is operational but highly degraded performance to the point of major impact on usage. • Important features of the system offering are unavailable with no acceptable workaround; however, operations can continue in a restricted fashion.
Minor (S3)	There is a partial, loss of use of the DSB Service with a medium-to-low impact on your business, but your business continues to function that is not a Critical Incident or a Major Incident. Short-term workaround is available, but not scalable.
Cosmetic (S4)	Inquiry regarding a routine technical issue; information requested on application capabilities, navigation, installation or configuration; bug affecting a small number of users. Acceptable workaround available.

2021

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2021	0	0	100%
November 2021	0	0	100%
October 2021	0	0	100%
September 2021	0	0	100%
August 2021	0	0	100%
July 2021	0	0	100%
June 2021	0	0	100%
May 2021	0	0	100%
April 2021	0	0	100%
March 2021	0	0	100%
February 2021	0	0	100%
January 2021	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	Message	50th percentile latency (ms)	90th percentile latency (ms)	99th percentile latency (ms)
December 2021	ISIN Record retrieval by ISIN code	10	25	68
	ISIN Record retrieval by ISIN attributes	31	49	100
	ISIN Create Requests	82	181	454
	ISIN Search	60	174	550
November 2021	ISIN Record retrieval by ISIN code	12	27	67
	ISIN Record retrieval by ISIN attributes	30	43	85
	ISIN Create Requests	89	168	271
	ISIN Search	57	111	325
October 2021	ISIN Record retrieval by ISIN code	13	25	62
	ISIN Record retrieval by ISIN attributes	31	52	92
	ISIN Create Requests	73	177	236
	ISIN Search	49	96	327
September 2021	ISIN Record retrieval by ISIN code	14	28	61
	ISIN Record retrieval by ISIN attributes	33	54	100
	ISIN Create Requests	66	169	238
	ISIN Search	33	92	426
August 2021	ISIN Record retrieval by ISIN code	14	37	83
	ISIN Record retrieval by ISIN attributes	32	64	107
	ISIN Create Requests	84	320	616
	ISIN Search	66	134	936
July 2021	ISIN Record retrieval by ISIN code	12	36	102
	ISIN Record retrieval by ISIN attributes	31	72	127
	ISIN Create Requests	87	509	872
	ISIN Search	49	119	233
June 2021	ISIN Record retrieval by ISIN code	17	67	124
	ISIN Record retrieval by ISIN attributes	31	74	139
	ISIN Create Requests	107	814	1,016^
	ISIN Search	90	158	709
May 2021	ISIN Record retrieval by ISIN code	16	56	134
	ISIN Record retrieval by ISIN attributes	30	69	138
	ISIN Create Requests	104	631	964
	ISIN Search	94	312	997
April 2021	ISIN Record retrieval by ISIN code	15	48	116
	ISIN Record retrieval by ISIN attributes	23	54	108
	ISIN Create Requests	59	297	488
	ISIN Search	74	200	456
March 2021	ISIN Record retrieval by ISIN code	15	34	86
	ISIN Record retrieval by ISIN attributes	24	55	109
	ISIN Create Requests	38	261	456
	ISIN Search	68	193	1,001
February 2021	ISIN Record retrieval by ISIN code	12	44	116
	ISIN Record retrieval by ISIN attributes	23	52	105
	ISIN Create Requests	39	274	471
	ISIN Search	73	200	596
January 2021	ISIN Record retrieval by ISIN code	11	30	79
	ISIN Record retrieval by ISIN attributes	21	46	92
	ISIN Create Requests	31	201	403
	ISIN Search	71	195	748

The DSB Latency targets:

^30th June 2021 – Please refer to the RCA document below for further details.

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 2 Duration	RCA (Root Cause Analysis)
14th February 2021	Intermittent Parse Context errors	23 hours 13 mins	View Document
15th February 2021	FIX API Disconnection	1 hour 57 minutes	View Document
15th February 2021	“Something went wrong” errors encountered by ReST users	9 hours 17 minutes	View Document
30th June 2021	For Increased latency during ISIN creation		View Document

2020

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2020	0	0	100%
November 2020	0	0	100%
October 2020	0	0	100%
September 2020	0	0	100%
August 2020	0	0	100%
July 2020	0	0	100%
June 2020	0	0	100%
May 2020	0	0	100%
April 2020	0	0	100%
March 2020	0	0	100%
February 2020	0	0	100%
January 2020	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	Message	50th percentile latency (ms)	90th percentile latency (ms)	99th percentile latency (ms)
December 2020	ISIN Record retrieval by ISIN code	12	47	131
	ISIN Record retrieval by ISIN attributes	21	43	87
	ISIN Create Requests	36	172	366
	ISIN Search	82	257	970
November 2020	ISIN Record retrieval by ISIN code	11	30	84
	ISIN Record retrieval by ISIN attributes	22	44	87
	ISIN Create Requests	83	173	382
	ISIN Search	73	217	847
October 2020	ISIN Record retrieval by ISIN code	12	30	77
	ISIN Record retrieval by ISIN attributes	21	46	90
	ISIN Create Requests	93	153	363
	ISIN Search	64	205	580
September 2020	ISIN Record retrieval by ISIN code	11	28	67
	ISIN Record retrieval by ISIN attributes	20	39	76
	ISIN Create Requests	49	125	298
	ISIN Search	58	158	1541
August 2020	ISIN Record retrieval by ISIN code	11	29	60
	ISIN Record retrieval by ISIN attributes	20	38	73
	ISIN Create Requests	53	121	191
	ISIN Search	52	89	231
July 2020	ISIN Record retrieval by ISIN code	10	28	55
	ISIN Record retrieval by ISIN attributes	21	43	75
	ISIN Create Requests	96	123	195
	ISIN Search	42	82	337
June 2020	ISIN Record retrieval by ISIN code	11	34	59
	ISIN Record retrieval by ISIN attributes	20	52	78
	ISIN Create Requests	44	121	191
	ISIN Search	64	96	235
May 2020	ISIN Record retrieval by ISIN code	12	37	66
	ISIN Record retrieval by ISIN attributes	20	54	84
	ISIN Create Requests	92	126	198
	ISIN Search	62	103	501
April 2020	ISIN Record retrieval by ISIN code	10	26	54
	ISIN Record retrieval by ISIN attributes	20	48	82
	ISIN Create Requests	96	131	202
	ISIN Search	55	83	273
March 2020	ISIN Record retrieval by ISIN code	10	25	52
	ISIN Record retrieval by ISIN attributes	20	51	83
	ISIN Create Requests	81	132	209
	ISIN Search	54	86	283
February 2020	ISIN Record retrieval by ISIN code	10	27	52
	ISIN Record retrieval by ISIN attributes	20	45	82
	ISIN Create Requests	98	135	205
	ISIN Search	53	91	334
January 2020	ISIN Record retrieval by ISIN code	26	50	80
	ISIN Record retrieval by ISIN attributes	47	90	128
	ISIN Create Requests	127	206	309
	ISIN Search	55	98	264

The DSB Latency targets:

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 1 Duration	Severity 2 Duration	RCA (Root Cause Analysis)
8th January 2020	FIX Service Disruption		5mins	View Document

2019

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2019	0	0	100%
November 2019	0	0	100%
October 2019	0	0	100%
September 2019	0	0	100%
August 2019	0	0	100%
July 2019	0	0	100%
June 2019	0	0	100%
May 2019	0	0	100%
April 2019	0	0	100%
March 2019	0	0	100%
February 2019	0	0	100%
January 2019	0	0	100%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	50 percentile latency (ms)	90 percentile latency (ms)	99 percentile latency (ms)
December 2019	52	132	285
November 2019	49	105	251
October 2019	49	96	197
September 2019	48	100	203
August 2019	44	91	223
July 2019	39	83	223
June 2019	43	128	256
May 2019	42	127	278
April 2019	42	137	299
March 2019	42	133	241
February 2019	38	142	247
January 2019	42	145	258

The DSB Latency target – 99% of all messages routed through the system are to be processed and delivered in 1,000ms.

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 1 Duration	Severity 2 Duration	RCA (Root Cause Analysis)
N/A	N/A	N/A	N/A	N/A

2018

Availability

Month and Year	# of Critical Incidents	Outage in minutes	Cumulative Availability
December 2018	0	0	99.98%
November 2018	0	0	99.97%
October 2018	0	0	99.97%
September 2018	0	0	99.97%
August 2018	0	0	99.97%
July 2018	0	0	99.96%
June 2018	0	0	99.96%
May 2018	0	0	99.95%
April 2018	0	0	99.95%
March 2018	1	21	99.94%
February 2018	1	99	99.94%
January 2018	1	12	99.99%

Availability is related to the duration of Severity 1 incidents. The DSB Availability target is 99.9%

Latency and Throughput Statistics

Month and Year	50 percentile latency (ms)	90 percentile latency (ms)	99 percentile latency (ms)
December 2018	42	135	241
November 2018	40	123	201
October 2018	45	148	638
September 2018	30	135	222
August 2018	21	127	201
July 2018	28	104	191
June 2018	30	127	199
May 2018	45	142	214
April 2018	144	941	2,029
March 2018	330	975	2,079
February 2018	300	745	1,522
January 2018	175	595	1,291

The DSB Latency target – 99% of all messages routed through the system are to be processed and delivered in 1,000ms.

Incident Details and Root Cause Analyses

Date of Incident	Incident Name	Severity 1 Duration	Severity 2 Duration	RCA (Root Cause Analysis)
25th March 2018	SOLR 25 Mar	21mins	1hr 58mins	View Document
23rd February 2018	SOLR 23 Feb	1hr 39mins	1hr 53mins	View Document
24th January 2018	SOLR 24 Jan	12mins	2hrs 26mins	View Document
3rd January 2018	SOLR 2/3 Jan (Cont.)		3hrs	View Document
2nd January 2018	SOLR 2/3 Jan		2hrs 4mins	View Document