In the SAP Commerce cache, invalidation works on a product type by invalidating cached Product items updated during the import in all connected SAP Commerce cluster nodes and by invalidating all cached FlexibleSearch results where Product type is included. This ensures that the cache only holds valid data and that the queries return consistent results. The invalidation is not limited to the node where the import is running, nor does it affect all cached FlexibleSearch results from the query results region. Reference: 1

The files that you should check first when troubleshooting a catalog synchronization issue are the sync media dump files, the localextensions.xml file, and the local.properties file. The sync media dump files contain information about the synchronization status and errors. The localextensions.xml file contains information about the extensions that are installed and active. The local.properties file contains information about the configuration settings and properties of the system.

The steps that you must do when configuring OAuth2 for SAP Cloud Integration are assigning ROLE_CLIENT or ROLE_TRUSTED_CLIENT in the SAP Commerce Backoffice, running an ImpEx to import the OAuthClientDetails and ExposedOAuthCredential type data in the SAP Commerce Backoffice, and creating the secret client credentials in the SAP Commerce Backoffice. These steps are necessary to enable role-based authentication between SAP Commerce Cloud and SAP Cloud Integration using OAuth2 tokens.