How To Fix WW640 - &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 640

• 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 WW640 - & ?

  The SAP error message WW640 typically relates to issues with the configuration of the system, particularly in the context of work scheduling or production planning. The specific details of the error can vary based on the context in which it occurs, but here are some general insights into the cause, potential solutions, and related information:
  Cause:
  
  Missing or Incorrect Configuration: The error may arise due to missing or incorrect configuration settings in the work center, routing, or production order.
  Data Inconsistencies: There may be inconsistencies in the master data, such as work centers or materials that are not properly defined or linked.
  Capacity Issues: The error can also occur if there are capacity constraints that prevent the scheduling of operations.
  System Settings: Sometimes, the error can be due to system settings that are not aligned with the requirements of the production process.
  
  Solution:
  
  Check Configuration: Review the configuration settings for work centers, routings, and production orders. Ensure that all necessary data is correctly maintained.
  Validate Master Data: Ensure that all relevant master data (materials, work centers, etc.) is correctly set up and that there are no missing entries.
  Review Capacity Planning: Check the capacity planning settings to ensure that there are no constraints that would prevent scheduling.
  Error Logs: Look at the error logs or transaction codes (like SLG1) to get more details about the error and its context.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional troubleshooting steps.
  SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it is a critical issue affecting production.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO01 (Create Production Order), CO02 (Change Production Order), and CR01 (Create Work Center) to navigate and check configurations.
  SAP Notes: Search for SAP Notes related to WW640 in the SAP Support Portal for any known issues or patches.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  Conclusion:
  Resolving the WW640 error requires a systematic approach to check configurations, master data, and capacity settings. By following the outlined steps, you should be able to identify and rectify the underlying issue. If necessary, do not hesitate to seek help from SAP support or community resources.