Hello Abdul,
you are receiving the error message no. R11124 due to the following;
You are trying to replicate a BP from your ERP system which contains contact person relationships. When this arrives in the CRM system, CRM tries to create these relationships also, but the business partners involved do not exist in CRM. So in this instance the errors messages are correct.
Normally when you create a business partner in ECC, the corresponding CRM BP will be created automatically, but sometimes for whatever reason, the CRM BP was not created. If the BP has not been created in the CRM system, the system will not find it and so raises error Message no. R11124. So you can resolve the error Message no. R11124 by request or initial download.
If this doesn't help, please check if all settings are maintained in transaction CRMC_BUT_CALL_FU, which contains the function modules relevant for the data exchange.
Please refer to the attached note 757955 that contains a list of the standard FM's that should be avtivated. please especially this this FM is there are marked active
CRMOU BUPA 1500000 CRM_BUPA_KOREA_OUTBOUND_MAP
CRMOU BUPR 1400000 CRMPHA_BR_BDOC_FILL_DATA
If they are not marked active, can you please set both to active and then check the transfer again.
thanks
Willie