Initial Download of ECC 6 customer_main to CRM works well but mapping of bupa_main from CRM 5 to ECC 6 didn't work.
In R3AS I got an short dump:
So I tried CRMM_BUPA_MAP to send single customers and I got that error.
Partially send, receivers have errors:
I have checked all the fields in the ecc6 settings and crm5 also.
it is very urgent bec. iam at client side.