Intercompany error 5002 syncing business partner

When the sync is triggert, the following error appears:

2025-11-04 16:31:30.083 | Warn BaseSynchronizer - 8075c67fcae64c7889423a6de769e9b7 SapB1Exception occurred: Code=-5002, Message=Internal error (-5002) occurred 
2025-11-04 16:31:30.083 | Info BaseSynchronizer - 8075c67fcae64c7889423a6de769e9b7 END: SynchronizeResult: ErrorCode=-5002, ErrorMessage=Internal error (-5002) occurred 
2025-11-04 16:31:30.083 | Warn EventRunner - Fault during work: SynchronizeResult: ErrorCode=-5002, ErrorMessage=Internal error (-5002) occurred, SynchronizeEvent (sbodb): Id=880491, ObjectType=2, EventType=Update, KeyAndValues=[CardCode=10193], Priority=0, SynchronizerOriginId=0, SynchronizerOriginType=Unknown 
2025-11-04 16:31:30.104 | Debug EventRunner - Done working: SynchronizeEvent (sbodb): Id=880491, ObjectType=2, EventType=Update, KeyAndValues=[CardCode=10193], Priority=0, SynchronizerOriginId=0, SynchronizerOriginType=Unknown 

What does that mean? I don't see any specific field (mapping) mentioned in this error. How can I resolve this?