How To Fix ACM251 - Changed the metadata of DCL &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM - Message-Class for all ACM functions/exceptions

• Message number: 251

• Message text: Changed the metadata of DCL &1

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 ACM251 - Changed the metadata of DCL &1 ?

  The SAP error message ACM251, which states "Changed the metadata of DCL &1," typically occurs in the context of Data Control Language (DCL) in SAP systems, particularly when there are changes made to the metadata of a DCL object. This can happen in various scenarios, such as when a DCL is modified, activated, or deactivated, and it may affect the authorization checks or the way data is accessed.
  Cause:
  
  Metadata Changes: The error is triggered when there are changes to the metadata of a DCL object, which could include changes to the underlying data model, fields, or authorization rules.
  Inconsistent State: The system may be in an inconsistent state due to changes that have not been properly activated or propagated.
  Transport Issues: If the DCL was transported from one system to another, there may be inconsistencies between the source and target systems.
  
  Solution:
  
  
  Re-activate the DCL: Go to the DCL definition in the SAP system and re-activate it. This can help to refresh the metadata and resolve inconsistencies.
  
  Navigate to the DCL in the SAP GUI (transaction code: SE11 or SE80).
  Find the DCL object and activate it again.
  
  
  
  Check for Dependencies: Ensure that all dependent objects (like CDS views or other DCLs) are also activated and consistent.
  
  
  Clear Cache: Sometimes, clearing the cache can help resolve issues related to metadata changes. You can do this by using transaction code SLG1 to check logs and SICF to clear the cache.
  
  
  Transport Management: If the issue is related to transport, ensure that all related objects are transported correctly and consistently across systems.
  
  
  Check Authorization: Ensure that the user has the necessary authorizations to access the DCL and that there are no conflicting authorizations.
  
  
  Related Information:
  
  DCL (Data Control Language): DCL is used in SAP to manage access control and authorization for data access in CDS (Core Data Services) views.
  CDS Views: These are used to define semantic data models in SAP and are often linked with DCLs for authorization purposes.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to DCLs and metadata changes. You can search for notes in the SAP Support Portal.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.