How To Fix CVI_FS_CHECK_CUST_EN004 - Although direction "customer -> BP" activated, no numbers are assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: CVI_FS_CHECK_CUST_EN - CVI_FS_CHECK_CUST_EN

• Message number: 004

• Message text: Although direction "customer -> BP" activated, no numbers are assigned

What causes this issue?

If the synchronization direction "customer -> business partner" has been
activated, the system expects there to be at least one entry in the view
"Define Number Assignment for Direction Customer to BP"
(CVIV_CUST_TO_BP1).

System Response

Synchronization has been activated from customer to business partner.
However, data cannot be synchronized at present.

How to fix this error?

If you want to synchronize data from the customer to the business
partner, you must assign at least one business partner grouping to a
customer account group in the Customizing activity
<DS:SIMG.CVIV_CUST_TO_BP1>Define Number Assignment for Direction
Customer to BP</>.
If not, you can deactivate the synchronization direction in the
Customizing activity <DS:SIMG.MDSV_CTRL_OPT_A>Activate Synchronization
Options</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CVI_FS_CHECK_CUST_EN004 - Although direction "customer -> BP" activated, no numbers are assigned ?

  The SAP error message CVI_FS_CHECK_CUST_EN004 indicates that there is an issue with the assignment of customer numbers to Business Partners (BPs) in the system. Specifically, it suggests that even though the direction for the integration of customer data to Business Partners is activated, there are no customer numbers assigned to the Business Partners.
  
  Cause:
  
  
  Missing Assignments: The most common cause is that the customer numbers have not been assigned to the Business Partners in the system. This can happen if the Business Partner was created without linking it to an existing customer master record.
  
  
  
  Configuration Issues: There may be configuration issues in the Customer-Vendor Integration (CVI) settings that prevent the assignment of customer numbers to Business Partners.
  
  
  Data Migration Issues: If data was migrated from an older system or if there were changes in the data model, it could lead to inconsistencies in the assignment of customer numbers.
  
  
  Inconsistent Data: There may be inconsistencies in