#112663

API Change: 2 Fields Modified in Recommendations Endpoint

Schema change

Events · this range

Change detected2026-10-23 08:21:54 UTC· Around selected event · ±2 hours

GET/api/recommendationsfrontend-proxy11 changed fields

Observed changes describe recorded data. They do not by themselves confirm a breaking API change.

Evidence

JSON

Markdown

{"anomaly_hashes":["e41b1309:s:765f1d99","e41b1309:s:89a24bcc","e41b1309:s:fbe4d2ca","e41b1309:s:ee119d18","e41b1309:s:81dcdfee","e41b1309:s:7965b01c","e41b1309:s:453dc1ac","e41b1309:s:3811d62e","e41b1309:s:f442be97","e41b1309:s:9a1b2465"],"deleted_fields":[],"endpoint_host":"frontend-proxy","endpoint_method":"GET","endpoint_path":"/api/recommendations","format_changes":[],"modified_fields":["http.response.status_code","service.instance.id"],"new_fields":["[*].event_dropped_attributes_count","[*].event_name","[*].event_time","browser.language","demo.synthetic_request","enduser.id","tenant.id","tenant.name","user.id"],"shape_changes":[]}

## API Change: 2 Fields Modified in Recommendations Endpoint

- Type: api_change
- Severity: critical

Jump to:Field changes Matching span activity Trace Logs Matching events Session replay

Field changes

Formats are inferred from sample values and may be inaccurate.

Field	Change	Before	After
Detected Oct 12, 08:29:22 UTC
http.response.status_code	Modified	number, string Inferred format: http_status, integer Sample values 200 200	string Inferred format: http_status Sample values 200
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-6949cc4f5b-rzbht.frontend default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy default.load-generator-86dcbb4bb-j28lw.load-generator	string Inferred format: text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy
Detected Oct 13, 19:53:49 UTC
[*].event_dropped_attributes_count	Added	Not previously observed	number Inferred format: integer Sample values 0
[*].event_name	Added	Not previously observed	string Inferred format: text Sample values fetchStart domainLookupStart domainLookupEnd Show 5 more sample values connectStart connectEnd requestStart responseStart responseEnd
[*].event_time	Added	Not previously observed	string Inferred format: YYYY-MM-DDThh:mm:ss.sTZD Sample values 2026-10-13T19:53:26.085100048Z 2026-10-13T19:53:26.099600048Z 2026-10-13T19:53:26.139900049Z Show 1 more sample values 2026-10-13T19:53:26.143400049Z
browser.language	Added	Not previously observed	string Inferred format: text Sample values en-US
demo.synthetic_request	Added	Not previously observed	string Inferred format: text Sample values true
enduser.id	Added	Not previously observed	string Inferred format: uuid Sample values b7da2798-241b-4c49-9745-9c5125a9a219
tenant.id	Added	Not previously observed	string Inferred format: text Sample values otel-demo
tenant.name	Added	Not previously observed	string Inferred format: text Sample values OpenTelemetry Demo
user.id	Added	Not previously observed	string Inferred format: uuid Sample values b7da2798-241b-4c49-9745-9c5125a9a219
Detected Oct 20, 09:35:23 UTC
user.id	Added	Not previously observed	string Inferred format: uuid Sample values ba4682bb-0d38-4e10-be93-c42f6b959cc0
Detected Oct 22, 09:02:39 UTC
http.response.status_code	Modified	number, string Inferred format: http_status, integer Sample values 200 200	string Inferred format: http_status Sample values 200
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-6949cc4f5b-rzbht.frontend default.load-generator-86dcbb4bb-j28lw.load-generator default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy	string Inferred format: text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy
Detected Oct 22, 09:45:03 UTC
http.response.status_code	Modified	number, string Inferred format: http_status, integer Sample values 200 200	number Inferred format: integer Sample values 200
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy default.frontend-6949cc4f5b-rzbht.frontend default.load-generator-86dcbb4bb-j28lw.load-generator	string Inferred format: hostname Sample values default.frontend-6949cc4f5b-rzbht.frontend
Detected Oct 22, 11:12:04 UTC
user.id	Added	Not previously observed	string Inferred format: uuid Sample values 5efadaf1-0781-4d60-936a-4f5d1f4741fd
Detected Oct 22, 12:35:42 UTC
[*].event_dropped_attributes_count	Added	Not previously observed	number Inferred format: integer Sample values 0
[*].event_name	Added	Not previously observed	string Inferred format: text Sample values fetchStart domainLookupStart domainLookupEnd Show 5 more sample values connectStart connectEnd requestStart responseStart responseEnd
[*].event_time	Added	Not previously observed	string Inferred format: YYYY-MM-DDThh:mm:ss.sTZD Sample values 2026-10-22T12:35:25.411400097Z 2026-10-22T12:35:25.433800097Z 2026-10-22T12:35:25.470600098Z Show 1 more sample values 2026-10-22T12:35:25.471600098Z
browser.language	Added	Not previously observed	string Inferred format: text Sample values en-US
demo.synthetic_request	Added	Not previously observed	string Inferred format: text Sample values true
enduser.id	Added	Not previously observed	string Inferred format: uuid Sample values 2c4c527d-8671-4736-87ea-5fc5594cca3a
tenant.id	Added	Not previously observed	string Inferred format: text Sample values otel-demo
tenant.name	Added	Not previously observed	string Inferred format: text Sample values OpenTelemetry Demo
Detected Oct 23, 03:02:35 UTC
http.response.status_code	Modified	number, string Inferred format: http_status, integer Sample values 200 200	number Inferred format: integer Sample values 200
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-6949cc4f5b-rzbht.frontend default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy default.load-generator-86dcbb4bb-j28lw.load-generator	string Inferred format: hostname Sample values default.frontend-6949cc4f5b-rzbht.frontend
Detected Oct 23, 16:02:31 UTC
http.response.status_code	Modified	number, string Inferred format: http_status, integer Sample values 200 200	string Inferred format: http_status Sample values 200
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-6949cc4f5b-rzbht.frontend default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy	string Inferred format: text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy
Detected Oct 25, 12:42:26 UTC
[*].event_dropped_attributes_count	Added	Not previously observed	number Inferred format: integer Sample values 0
[*].event_name	Added	Not previously observed	string Inferred format: text Sample values fetchStart domainLookupStart domainLookupEnd Show 5 more sample values connectStart connectEnd requestStart responseStart responseEnd
[*].event_time	Added	Not previously observed	string Inferred format: YYYY-MM-DDThh:mm:ss.sTZD Sample values 2026-10-25T12:42:17.698100048Z 2026-10-25T12:42:17.707100048Z 2026-10-25T12:42:17.765600048Z Show 5 more sample values 2026-10-25T12:42:17.766400049Z 2026-10-25T12:42:17.684000097Z 2026-10-25T12:42:17.685300098Z 2026-10-25T12:42:17.755500097Z 2026-10-25T12:42:17.757000097Z
browser.language	Added	Not previously observed	string Inferred format: text Sample values en-US
demo.synthetic_request	Added	Not previously observed	string Inferred format: text Sample values true
enduser.id	Added	Not previously observed	string Inferred format: uuid Sample values 61528785-6523-40fd-be19-016a5be6f78f
tenant.id	Added	Not previously observed	string Inferred format: text Sample values otel-demo
tenant.name	Added	Not previously observed	string Inferred format: text Sample values OpenTelemetry Demo
service.instance.id	Format changed	string Inferred format: hostname, text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy default.frontend-6949cc4f5b-rzbht.frontend	string Inferred format: text Sample values default.frontend-proxy-6c8d4bfd48-2rz8z.frontend-proxy default.load-generator-86dcbb4bb-j28lw.load-generator

Field changes

Matching span activity

Trace

Logs

Matching events

Session replay

AI Assistant