When using Sites 9.6 the CD services stop running with the below error or similar in the logs:
ERROR AbstractRetryBlock - Retry limit exceeded.
com.sdl.delivery.licensing.api.LicenseException: Got error response code 2021 for request: Request{method=POST, url=https://sdl.prod.sentinelcloud.com/scc/licenseSessions} with response body :<?xml version="1.0" encoding="UTF-8" standalone="yes"?><error><status>Fail</status><errorCode>2021</errorCode><errorDescription>Concurrency limit is reached</errorDescription></error>
at com.sdl.delivery.licensing.client.LicenseClient.invoke(LicenseClient.java:367)
at com.sdl.delivery.licensing.client.LicenseClient.obtainLicenseSession(LicenseClient.java:236)
at com.sdl.delivery.retry.FunctionRetryBlock.execute(FunctionRetryBlock.java:40)
at com.sdl.delivery.licensing.client.LicenseClient.obtainLicenseSessionWithRetry(LicenseClient.java:245)
The number or cores running the services is less than the agreed limit with RWS and the customer ID is correctly configured in the service.
