How To Fix C7028 - No work center or calender in operation/activity

SAP Error Message - Details

• Message type: E = Error

• Message class: C7 - Scheduling

• Message number: 028

• Message text: No work center or calender in operation/activity

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 C7028 - No work center or calender in operation/activity ?

  The SAP error message C7028 ("No work center or calendar in operation/activity") typically occurs in the context of production planning or project management when the system cannot find a valid work center or calendar for a specific operation or activity in a routing or task list. This can hinder the ability to schedule or execute production orders or project activities.
  Causes:
  
  Missing Work Center: The operation/activity in the routing does not have an assigned work center.
  Missing Calendar: The work center does not have an associated calendar defined, which is necessary for scheduling.
  Incorrect Configuration: The work center may be incorrectly configured or inactive.
  Routing Issues: The routing itself may be incomplete or incorrectly set up, leading to missing links to work centers.
  Master Data Issues: There may be issues with the master data for the work center or the routing.
  
  Solutions:
  
  
  Check Work Center Assignment:
  
  Go to the routing or task list in question and verify that each operation has a valid work center assigned.
  If a work center is missing, assign the appropriate work center to the operation.
  
  
  
  Verify Work Center Configuration:
  
  Navigate to the work center configuration (Transaction code CR01 or CR02) and ensure that the work center is active and properly configured.
  Check if a valid calendar is assigned to the work center.
  
  
  
  Check Calendar Assignment:
  
  Ensure that the work center has a valid production calendar assigned. This can be checked in the work center details.
  
  
  
  Review Routing:
  
  Check the routing for any inconsistencies or missing information. Ensure that all operations are correctly defined and linked to the appropriate work centers.
  
  
  
  Master Data Maintenance:
  
  Ensure that all relevant master data (work centers, routings, etc.) is correctly maintained and up to date.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on work centers and routings.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CR01/CR02: Create/Change Work Center
  CA01/CA02: Create/Change Routing
  C223: Display Work Center Assignment in Routing
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  
  User Roles: Ensure that the user has the necessary permissions to view and edit work centers and routings.
  
  
  By following these steps, you should be able to identify and resolve the cause of the C7028 error in SAP. If the issue persists, it may be beneficial to consult with your SAP support team or a functional consultant for further assistance.