# Troubleshoot other problems
<a name="misc-problems"></a>

This section includes guidance for problems not related to issuing or validating ACM certificates.

**Topics**
+ [Certification Authority Authorization (CAA) problems](troubleshooting-caa.md)
+ [Certificate import problems](troubleshoot-import.md)
+ [Certificate pinning problems](troubleshooting-pinning.md)
+ [API Gateway problems](troubleshoot-apigateway.md)
+ [What to do when a working certificate fails unexpectedly](unexpected-failure.md)
+ [Problems with the ACM service-linked role (SLR)](slr-problems.md)