3657758 - Error "Business partner XXXXXX doesn't exist" occurs when preparing or simulating the migration object

In the "Migrate Your Data – Migration Cockpit" app, the following error message is displayed when preparing or simulating the object "Supplier - extend existing record by new org levels" or the object "Customer - extend existing record by new org levels".

• Business partner XXXXXX doesn't exist
• Message class: CNV_DMC_SIN 621

SAP S/4HANA Cloud Public Edition

1. Open Migration Cockpit.
2. Open the migration project.
3. Open the "Supplier - extend existing record by new org levels" or "Customer - extend existing record by new org levels".
4. Click the "Prepare" step or 'simulate' step.
5. Error occurs.

Before preparing the migration object, it is necessary to confirm the Mapping Tasks.

Confirm all mapping tasks, especially the "Mapping of Supplier" task for object Supplier - extend existing record by new org levels or the "Mapping of Customer" task for object Customer - extend existing record by new org levels.

• Customer - extend existing record by new org levels | SAP Help Portal
• Supplier - extend existing record by new org levels | SAP Help Portal

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