How To Fix CY646 - Capacity requirements group/-combination &/&: function & triggered

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 646

• Message text: Capacity requirements group/-combination &/&: function & triggered

What causes this issue?

The function given e.g. "change capacity" was triggered for a capacity
requirements group/-combination.

System Response

The system carries the function given.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY646 - Capacity requirements group/-combination &/&: function & triggered ?

  The SAP error message CY646 typically relates to issues in capacity planning and production scheduling within the SAP system, particularly in the context of capacity requirements planning (CRP). This error indicates that there is a problem with the capacity requirements group or combination that has been defined in the system.
  Cause:
  The error message CY646 can be triggered by several factors, including:
  
  Invalid Capacity Requirements Group: The specified capacity requirements group does not exist or is not correctly defined in the system.
  Incorrect Configuration: There may be a misconfiguration in the production planning settings, such as incorrect assignment of work centers or routing.
  Missing Master Data: Required master data (like work centers, production resources/tools, or capacity planning data) may be missing or incomplete.
  Capacity Overload: The system may be trying to schedule more work than the available capacity can handle, leading to conflicts in capacity planning.
  
  Solution:
  To resolve the CY646 error, you can take the following steps:
  
  
  Check Capacity Requirements Group:
  
  Verify that the capacity requirements group specified in the error message exists in the system.
  Ensure that it is correctly assigned to the relevant work centers or production resources.
  
  
  
  Review Configuration:
  
  Check the configuration settings for capacity planning in the SAP system.
  Ensure that work centers are correctly defined and that they have the necessary capacity data.
  
  
  
  Validate Master Data:
  
  Ensure that all relevant master data is complete and accurate. This includes checking work centers, routing, and production resources/tools.
  If any master data is missing, create or update it as necessary.
  
  
  
  Analyze Capacity Load:
  
  Use transaction codes like CM01 (Capacity Planning) or CM21 (Capacity Leveling) to analyze the capacity load and identify any overload situations.
  Adjust production schedules or capacity settings to alleviate any overloads.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details related to capacity planning and the error message CY646.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CM01, CM21, and C223 (for capacity planning) to help diagnose and resolve capacity-related issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to the CY646 error message.
  Training and Documentation: Consider training sessions or documentation on SAP Production Planning (PP) and Capacity Planning to better understand the underlying processes and configurations.
  
  By following these steps, you should be able to identify the root cause of the CY646 error and implement the necessary solutions to resolve it.