[Bug] MSK Replicator fails topic list updates for self managed clusters
Author: mmehrtenCreated Sep 18, 2026Updated Sep 18, 2026
Labelsbugservice/kafkaneeds-triage
Terraform and AWS Provider Version
v6.3.0Affected Resource(s) or Data Source(s)
- aws_msk_replicator
Expected Behavior
Updating topics creates consistent MSK Replicator updates.
Actual Behavior
Terraform provider for MSK replicator has a bug. The provider creates errors when updating the list of topics to replicate. The provider does not create a valid UpdateReplicationInfo request when targeting third party clusters.
{
"sourceKafkaClusterArn": "",
"targetKafkaClusterArn": "<MSK target ARN>"
}where sourceKafkaClusterArn should have been populated with our confluent cluster's ID
Relevant Error/Panic Output
Sample Terraform Configuration
Click to expand configurationSteps to Reproduce
- Create a Replicator
- Update topics
Debug Logging
Click to expand log outputGenAI / LLM Assisted Development
n/a
Important Facts and References
No response
Would you like to implement a fix?
No
Source: hashicorp/terraform-provider-aws