How To Fix MSG_CL_ER251 - Publication with empty Application change key is not possible

MSG_CL_ER251 - Overview

• Message type: E = Error

• Message class: MSG_CL_ER - Message Class for Enterprise Registry

• Message number: 251

• Message text: Publication with empty Application change key is not possible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MSG_CL_ER251 - Publication with empty Application change key is not possible ?

  The SAP error message MSG_CL_ER251 indicates that a publication cannot be created or modified because the application change key is empty. This typically occurs in the context of SAP's Change and Transport System (CTS) or when dealing with publications in SAP's Enterprise Information Management (EIM) or similar modules.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Application Change Key: The application change key, which is necessary for identifying the changes to be published, is not set or is empty.
  
  Configuration Issues: There may be issues with the configuration of the publication or the underlying data model.
  Data Integrity Issues: The data being processed may not meet the required integrity constraints, leading to an inability to generate a valid publication.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration:
  
  Ensure that the publication is correctly configured. Verify that all required fields, including the application change key, are filled out properly.
  Review the