Solution : https://service.sap.com/sap/support/notes/647500 (SAP Service marketplace login required)
Summary :
Updating relations within the CRM server can trigger error B1015 in the R/3 system when a partner function involving a customer and an external contact person is first established in R/3. This error is caused because the CRM server additionally creates a contact person relationship, which does not synchronize with the R/3 model. Not referenced in R/3, any subsequent modifications to this contact relationship in CRM prompt the error. Resolution involves applying provided source code modifications to align both systems' data handling. Refer to Note 490454 for more background.
Key words :
attached source code corrections, additional components found, open fi event &, external contact person, contact person relationship, crm server leads, crm server, error b1015, partner function, data model
Related Notes :
490454 | Business partner relationships and partner functions in CRM |