How To Fix CY128 - Please select only one work center

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 128

• Message text: Please select only one work center

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CY128 - Please select only one work center ?

  The SAP error message CY128: "Please select only one work center" typically occurs in the context of production planning or capacity planning when a user attempts to perform an action that requires a single work center selection, but multiple work centers have been selected instead.
  Cause:
  
  Multiple Selections: The most common cause of this error is that the user has selected multiple work centers in a transaction or report that only allows for a single work center to be processed at a time.
  Incorrect Transaction: The transaction being used may not support multiple work centers, leading to this error when the system detects more than one selection.
  User Input Error: The user may have inadvertently selected multiple work centers due to a misunderstanding of the interface or the selection criteria.
  
  Solution:
  
  
  Select a Single Work Center: Review your selection criteria and ensure that only one work center is selected before executing the transaction. You can do this by:
  
  Deselecting any additional work centers.
  Using filters or search functions to narrow down to a single work center.
  
  
  
  Check Transaction Requirements: Refer to the documentation or help for the specific transaction you are using to confirm that it only allows for a single work center. If it does, ensure your selection aligns with this requirement.
  
  
  Use Alternative Transactions: If you need to work with multiple work centers, look for alternative transactions or reports that support batch processing or multiple selections.
  
  
  Consult with SAP Support: If you believe you are encountering this error inappropriately, or if the issue persists despite following the above steps, consider reaching out to your SAP support team or consulting the SAP Knowledge Base for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the specific transaction codes you are using (e.g., CO01 for production orders, CM01 for capacity planning) and their requirements regarding work center selection.
  User Training: Ensure that users are trained on how to properly select work centers and understand the limitations of the transactions they are using.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context or solutions.
  
  By following these steps, you should be able to resolve the CY128 error and proceed with your SAP tasks effectively.