Some issues might appear while importing entitlements to OpenIAM. Most common of them and the ways to tackle the problems emerging are described in the documents, as indicated below.

IssueWays to troubleshoot in the respective document
AD filter to import groupsThis info can be found in AD PowerShell documentation. This particular issue is covered in Synchronizing AD groups and Synchronizing AD group memberships sections.
LogsThere are Java (LDAP, Linux, Script, etc.) and PowerShell (AD, Azure, etc.) connectors. Java connectors are on the OpenIAM side and their logs can be viewed the same way as any other OpenIAM service.
For rpm, see this document, namely the Check service logs section.
For Docker environment see this file.
RabbitMQ timeout issuesThis problem can be tackled by means of taking steps in this document.