How To Fix PPEACT421 - Fixed times are maintained at &1 &2; the type cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: PPEACT - Messages for iPPE ACT Application (Activities)

• Message number: 421

• Message text: Fixed times are maintained at &1 &2; the type cannot be changed

Self-Explanatory Message

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• What is the cause and solution for SAP error message PPEACT421 - Fixed times are maintained at &1 &2; the type cannot be changed ?

  The SAP error message PPEACT421 indicates that there are fixed times maintained for a specific activity or operation in the system, and as a result, the type of that activity cannot be changed. This typically occurs in the context of production planning or project management within SAP, where activities are defined with specific parameters.
  Cause:
  
  Fixed Times Defined: The error arises when there are fixed times (e.g., setup times, processing times) associated with the activity or operation in question. These fixed times are likely defined in the routing or work center.
  Type Change Attempt: The user is attempting to change the type of the activity (e.g., from a specific operation type to another) while fixed times are still associated with it.
  
  Solution:
  
  Review Fixed Times: Check the routing or work center associated with the activity to see what fixed times are defined. You can do this by navigating to the relevant transaction (e.g., CA01 for routing or CR01 for work centers).
  Remove or Adjust Fixed Times: If you need to change the type of the activity, you may need to remove or adjust the fixed times associated with it. This can be done by:
  
  Editing the routing or work center to remove the fixed times.
  Changing the fixed times to be compatible with the new type you want to assign.
  
  
  Consult Documentation: If you are unsure about the implications of changing fixed times, consult your organization's documentation or speak with a knowledgeable colleague or SAP consultant.
  Test Changes: After making the necessary adjustments, test the changes in a development or test environment before applying them in production to ensure that they do not negatively impact other processes.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CA01 (Create Routing), CA02 (Change Routing), CR01 (Create Work Center), and CR02 (Change Work Center).
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or patches that may address specific issues.
  User Roles and Permissions: Ensure that you have the necessary permissions to make changes to routings or work centers, as restrictions may also lead to errors.
  Documentation: Review SAP documentation or training materials related to production planning and routing to better understand how fixed times and activity types interact.
  
  By following these steps, you should be able to resolve the PPEACT421 error and successfully change the type of the activity as needed.