How To Fix MW790 - Values for seasonal scheduling could not be selected

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 790

• Message text: Values for seasonal scheduling could not be selected

What causes this issue?

The business function is not activated. The values for seasonal
scheduling could not be selected.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW790 - Values for seasonal scheduling could not be selected ?

  The SAP error message MW790, which states "Values for seasonal scheduling could not be selected," typically occurs in the context of materials management and production planning when the system is unable to retrieve or process seasonal scheduling data for a material. This can happen for various reasons, including configuration issues, missing data, or incorrect settings.
  Causes:
  
  Missing Seasonal Data: The seasonal data for the material may not be maintained in the system. This includes missing entries in the seasonal scheduling tables.
  Incorrect Configuration: The configuration settings for seasonal scheduling may not be set up correctly in the system.
  Material Master Issues: The material master record may not have the necessary data or may not be set up for seasonal scheduling.
  Planning Version Issues: The planning version being used may not have the seasonal data included.
  Authorization Issues: The user may not have the necessary authorizations to access the seasonal scheduling data.
  
  Solutions:
  
  Check Seasonal Data: Verify that the seasonal scheduling data is correctly maintained for the material in question. This can be done by checking the relevant tables (e.g., MRP tables) or using transaction codes like MD61 (for planning) or MD02 (for MRP run).
  Review Configuration: Ensure that the configuration for seasonal scheduling is correctly set up in the system. This may involve checking the settings in the IMG (Implementation Guide) under the relevant sections for material requirements planning (MRP).
  Update Material Master: If the material master does not have the necessary seasonal scheduling data, update it accordingly. You can do this using transaction code MM02 to modify the material master.
  Check Planning Version: Ensure that the correct planning version is being used and that it includes the seasonal scheduling data.
  Authorization Check: Verify that the user has the necessary authorizations to access and modify seasonal scheduling data. This may involve checking user roles and authorizations in the system.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM02 (Change Material), MD61 (Create Planning), and MD02 (MRP Run).
  SAP Notes: Check for any SAP Notes related to seasonal scheduling and the specific error message MW790. SAP Notes often provide patches or additional guidance for known issues.
  Documentation: Review SAP documentation or help files related to seasonal scheduling and MRP to understand the requirements and configurations better.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.