SAP Knowledge Base Article - Public

2787414 - Error R1091: Migration of Customer


While performing the migration for 'Customer' below error occurs;

"Grouping xxxx has external number assignment, enter a number"


  • SAP S/4HANA Cloud

Reproducing the Issue

  1. Open App "Migrate your Data".
  2. Go to the relevant migration project.
  3. Select the Migration object "Customer".
  4. Perform Simulation.


During migration, you can choose between internal and external number assignment for new customers based on the settings of the BP Grouping.


The settings which are made together with your BP Grouping customizing will determine whether the customer will be created with internal or external numbering.

Please check if the Key field 'Customer number' maintained in the migration template is in the defined number range using the SSCUI 'Define Groupings and Assign Number Ranges' (sscui id -102241) and  'Define Number Ranges' (sscui id - 102296) in the 'Manage your Solution' App.

See Also

Customer Migration Object


Customer, s/4hana, cloud, CA-GTF-MIG, external, internal, BP, number, assignment. , KBA , CA-GTF-MIG , SAP S/4HANA Data Migration Cockpit Content (LTMC) , LO-MD-BP , Business Partners , Problem


SAP S/4HANA Cloud all versions