Hi Vijay,
1. Please check CRM customizing :
IMG > Cross-Application Components
> Payment Cards
> Basic Settings
> Assign Checking Rule
and see if the FM PMENC/P_CHK_MC was maintained here.
2. Then please check in SE37 whether this FM exist.
3. If it is maintained in the CRM customizing but do not actually exist in CRM, there are two options:
- remove the FM from the customizing and use standard ones.
- create FM PMENC/P_CHK_MC in CRM.
Best Regards,
Ellen