How To Fix CNACL_MSG_CL001 - Activity &1 is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: CNACL_MSG_CL - Message class for ACL FOR PS

• Message number: 001

• Message text: Activity &1 is invalid

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 CNACL_MSG_CL001 - Activity &1 is invalid ?

  The SAP error message CNACL_MSG_CL001 with the description "Activity &1 is invalid" typically occurs in the context of project management or controlling modules, particularly when dealing with activities in a project or network.
  Cause:
  This error message indicates that the system has encountered an activity that is either not defined, has been deleted, or is not valid in the current context. The specific reasons could include:
  
  Activity Not Defined: The activity you are trying to reference does not exist in the system.
  Deleted Activity: The activity may have been deleted or marked as inactive.
  Incorrect Activity Type: The activity type may not be valid for the operation you are trying to perform.
  Authorization Issues: The user may not have the necessary permissions to access the activity.
  Data Inconsistency: There may be inconsistencies in the data related to the project or network.
  
  Solution:
  To resolve the CNACL_MSG_CL001 error, you can take the following steps:
  
  
  Verify Activity Existence:
  
  Check if the activity ID you are trying to use is valid and exists in the system. You can do this by navigating to the relevant project or network and confirming the activity's presence.
  
  
  
  Check Activity Status:
  
  Ensure that the activity is not marked as deleted or inactive. If it has been deleted, you may need to recreate it or use a different activity.
  
  
  
  Review Activity Type:
  
  Confirm that the activity type is appropriate for the context in which you are trying to use it. If necessary, consult your project management guidelines.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to access and modify the activity. If you suspect authorization issues, contact your SAP security administrator.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the project or network to identify any data inconsistencies. This can often be done through transaction codes like CJ20N (Project Builder) or CN22 (Network).
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for any specific notes related to this error message. There may be additional context or updates that could be relevant.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting SAP Notes for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CN22 (Network), and others that may help you navigate and troubleshoot project-related issues.
  SAP Notes: Search for SAP Notes related to CNACL_MSG_CL001 for any patches or updates that may address this error.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users' experiences.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.