Symptoms
When changing the UI authentication from IAM to SCRAM, Event Streams fails to remove foundational services operand request, which are no longer needed. This is more likely to happen when upgrading IBM Cloud Pak for Integration from 2022.2 to 16.1.0, which removes support for using IAM.
Causes
The IBM Cloud Pak foundational services cleanup does not start when the support for IAM is removed.
Resolving the problem
Run the following command to manually delete the foundational services operand request created by Event Streams:
oc delete operandrequest <INSTANCE>-ibm-es-eventstreams -n <NAMESPACE>