How To Fix WW639 - &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 639

• Message text: &

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 WW639 - & ?

  The SAP error message WW639 typically relates to issues with the configuration of the system, particularly in the context of work scheduling or production planning. The specific message may vary based on the context in which it appears, but it generally indicates a problem with the work center, routing, or production order.
  Cause:
  
  Work Center Issues: The work center may not be properly defined or may be inactive.
  Routing Problems: The routing for the production order may be missing or incorrectly configured.
  Capacity Constraints: There may be capacity constraints that prevent the scheduling of the order.
  Master Data Issues: Missing or incorrect master data related to materials, work centers, or production versions.
  
  Solution:
  
  
  Check Work Center Configuration:
  
  Ensure that the work center is correctly defined and active.
  Verify that the work center has the necessary capacity and is assigned to the correct plant.
  
  
  
  Review Routing:
  
  Check if the routing for the production order exists and is correctly assigned.
  Ensure that all operations in the routing are valid and that the sequence is correct.
  
  
  
  Examine Production Order:
  
  Look at the production order for any inconsistencies or missing information.
  Ensure that the order is correctly linked to the material and that the material master data is complete.
  
  
  
  Capacity Planning:
  
  Review the capacity planning settings to ensure that there are no constraints that would prevent scheduling.
  Adjust the capacity or reschedule the order if necessary.
  
  
  
  Master Data Verification:
  
  Check the master data for materials, work centers, and production versions to ensure they are complete and accurate.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CR01 (Create Work Center), CA01 (Create Routing), or CO01 (Create Production Order) to check or modify the relevant data.
  SAP Notes: Look for SAP Notes related to WW639 for any specific patches or updates that may address known issues.
  Documentation: Refer to SAP documentation or help files for detailed explanations of work centers, routings, and production orders.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or refer to SAP community forums for additional insights.