How To Fix CRM_MKT_EXTERNAL402 - Connection is still in use; deletion not possible

CRM_MKT_EXTERNAL402 - Overview

• Message type: E = Error

• Message class: CRM_MKT_EXTERNAL - CRM MKT: Messages for Interface to External Products

• Message number: 402

• Message text: Connection is still in use; deletion not possible

What causes this issue?

This text similar to message long text CRM_MKT_EXTERNAL401
This entry cannot be deleted.

System Response

The system found that this server connection is already being used;
in other words, it is already stored in other tables. The system
does not allow you to delete, since this could cause errors in the
following functions:
Export of a marketing plan or marketing campaign and the corresponding
target groups from the Marekting Planner to an external system
Import of a marketing plan or marketing campaign and the corresponding
target groups from external systems
Import of business partners of an external target group from an
external system

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CRM_MKT_EXTERNAL402 - Details

• The SAP error message CRM_MKT_EXTERNAL402 indicates that a connection is still in use, and therefore, it cannot be deleted. This error typically occurs in the context of SAP Customer Relationship Management (CRM) when trying to delete a marketing connection or a related object that is currently being referenced or utilized by another process or transaction.
  Causes:
  
  Active Sessions: There may be active sessions or transactions that are using the connection you are trying to delete.
  Open Locks: The object might be locked by another user or process, preventing deletion.
  Dependencies: The connection may have dependencies on other objects or processes that need to be resolved before deletion.
  Background Jobs: There could be background jobs or processes that are still running and using the connection.
  
  Solutions:
  
  
  Check Active Sessions: Verify if there are any active sessions or transactions that are using the connection. You can use transaction codes like SM04 (User Overview) or SM50 (Process Overview) to check