How To Fix WW644 - The planned date was &. The update date is &.

WW644 - Overview

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 644

• Message text: The planned date was &. The update date is &.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WW644 - The planned date was &. The update date is &. ?

  The SAP error message WW644 typically indicates a discrepancy between the planned date and the update date for a work order or maintenance order. This error often arises in the context of work scheduling and resource planning within the SAP system, particularly in modules like PM (Plant Maintenance) or PS (Project System).
  
  Cause:
  
  Date Mismatch: The planned date for the work order or task is earlier than the update date. This can happen if the order was created or modified after the planned date was set.
  System Configuration: There may be configuration settings in the SAP system that enforce strict date validation rules.
  User Input Error: Users may inadvertently enter incorrect dates when creating or updating work orders.
  
  
  Solution:
  
  Check Dates: Review the planned date and update date in the work order. Ensure that the planned date is not later than the update date.
  Adjust Dates: If the planned date is incorrect, update it to a date