3495037 - Error "CNV_DMC_SIN402" when migrating "Customer - extend existing customer by new org levels"

In Migration cockpit, during migration of object "customer - extend existing customer by new org levels", the following error is being raised:

=> "Customer && is confirmed and differs from supplier && (see long text)" -  Message no. CNV_DMC_SIN402.

• SAP S/4HANA Cloud Public Edition
  • "Migrate Your Data – Migration Cockpit" app
    • Migrate Data Using Staging Tables.

Mapping of "Customer" and "Supplier" are pointing to different entities. The target entity value must match character-for-character in the system. If the values differ in any way — including additional or missing leading zeros — they are treated as different values. 

For example: 

Customer:
ABC (Source) --> 456 (Target)

Supplier:
123 (Source) --> 00456 (Target)

In this case, 456 and 00456 are considered different values, which results in the inconsistency.

The solution to this issue should come from the answer to the following question:

Which BP is to be enhanced?

With the answer in mind, the mapping has to be done in a way that both source IDs (Customer and Supplier) point to that exact same target entity. 

Example of a correct mapping:

Customer:
ABC (Source) --> 456 (Target)

Supplier:
123 (Source) --> 456 (Target)

Ensure the target value matches exactly, including formatting and leading zeros. 

Customer - extend existing record by new org levels. 

CNV_DMC_SIN402, migration, cockpit, customer – extend existing customer by new org levels, CNV_DMC_SIN 402, mapping values.  , KBA , CA-GTF-MIG , SAP S/4HANA Data Migration Cockpit Content , Problem