How To Fix CNACL_MSG_CL026 - Operation cancelled

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 026

• Message text: Operation cancelled

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_CL026 - Operation cancelled ?

  The SAP error message CNACL_MSG_CL026 with the description "Operation cancelled" typically occurs in the context of project management or controlling modules, particularly when dealing with project structures, network activities, or related transactions. This error can arise due to various reasons, and understanding the cause is essential for finding an appropriate solution.
  Possible Causes:
  
  User Action: The operation may have been manually cancelled by the user during a transaction.
  System Constraints: The system may have encountered a condition that prevents the operation from being completed, such as missing data or invalid entries.
  Authorization Issues: The user may not have the necessary authorizations to perform the operation, leading to a cancellation.
  Technical Errors: There could be underlying technical issues, such as database locks or system performance problems, that cause the operation to be aborted.
  Configuration Issues: Incorrect configuration settings in the project or controlling module may lead to unexpected behavior.
  
  Solutions:
  
  Check User Actions: Ensure that the operation was not intentionally cancelled by the user. If it was, re-initiate the process.
  Review Input Data: Verify that all required fields are filled out correctly and that there are no invalid entries. Correct any discrepancies and try again.
  Authorization Check: Confirm that the user has the necessary permissions to perform the operation. If not, contact your SAP security administrator to obtain the required authorizations.
  System Logs: Check the system logs (transaction codes like SLG1) for any additional error messages or warnings that could provide more context about the cancellation.
  Technical Support: If the issue persists, consider reaching out to your SAP Basis or technical support team to investigate any underlying system issues or performance problems.
  Configuration Review: If you suspect configuration issues, review the relevant settings in the project or controlling module to ensure they are set up correctly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be involved in the process, such as CJ20N (Project Builder), CN41 (Project Overview), or others related to project management.
  SAP Notes: Search for SAP Notes related to the error message or the specific transaction you are working with. SAP Notes often contain fixes or workarounds for known issues.
  Documentation: Review SAP documentation or help files related to the specific module you are working in for additional guidance on handling errors.
  
  If you continue to experience issues after trying the above solutions, it may be beneficial to consult with your SAP support team or a professional with expertise in SAP project management and controlling.