How To Fix MPE_OAN306 - Operation &1 is inconsistent. See long text for details.

MPE_OAN306 - Overview

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 306

• Message text: Operation &1 is inconsistent. See long text for details.

What causes this issue?

This operation has been set to be processed externally. In addition, a
cross-operation relationship exists for one or more of the operation
activities of the operation.
However, if an operation is to be processed externally, it is not
allowed to set any relationships for any of the operation activities of
the operation.

System Response

The system issues an error for this operation when you perform a
consistency check or try to release the routing.

How to fix this error?

If the operation is to be executed externally, delete all existing
relationships to other operations. If you want to retain the
relationships, then this operation cannot be performed externally. In
this case, change the control key assignment.

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.

MPE_OAN306 - Details

• The SAP error message MPE_OAN306, which states "Operation &1 is inconsistent. See long text for details," typically occurs in the context of Asset Accounting (FI-AA) or related modules when there is an inconsistency in the operation being performed on an asset. This could be due to various reasons, such as incorrect data entry, missing information, or issues with the asset master data.
  Possible Causes:
  
  Inconsistent Data: The operation you are trying to perform may not be valid due to missing or incorrect data in the asset master record.
  Incorrect Configuration: There may be configuration issues in the Asset Accounting settings that lead to inconsistencies.
  Transaction Errors: The transaction you are trying to execute may not be compatible with the current status of the asset (e.g., trying to retire an asset that is not fully capitalized).
  Authorization Issues: Lack of proper authorizations to perform the operation on the asset.
  System Bugs: Occasionally, bugs in the SAP system