Error while updating Account Owner via Data Migration Tool:
Please assign party role Employee Responsible – Sales only once
Reproducing the Issue
1. Go to Business Configuration work center
2. Select Overview view
3. Search for Migration of Customers.
4. Select Migration Mode: Modify already exisiting records.
5. Update only Account Owner and with entry Party Role XXX.
Above error is thrown.
The mapping of the Account ID : YYY is maintained as ZZZ at Convert Value Step.
This throws error as ZZZ already has an Owner assigned.
If the changes are required in Account ZZZ, then you have to proceed and delete the Owner data for ZZZ and modify via import.
But if you wish to change the Account ID:YYY, you need to map this correctly in the Migration Tool at step Convert Value and proceed further for modifications.
You can also update the Account Direct Responsibility Owner via Mass Data Maintainence.
KBA , AP-RC-BCT , Business Config. Tools (SAP Business ByDesign , How To