How To Fix >1636 - Change date &1 must be later than valid from date &2

>1636 - Overview

• Message type: E = Error

• Message class: >1 - Shockwave SAPGUI message handling

• Message number: 636

• Message text: Change date &1 must be later than valid from date &2

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.

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>1636 - Details

• The SAP error message 1636 indicates that there is an issue with the date configuration in a particular transaction or process. Specifically, the message states that the "Change date" must be later than the "Valid from date." This typically occurs in scenarios where you are trying to update or change a record that has date validity constraints.
  
  Cause:
  The error arises when:
  
  You are attempting to set a change date that is earlier than the valid from date of a record.
  The system enforces a rule that the change date must always be later than or equal to the valid from date to maintain data integrity.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Dates: Review the dates you are entering in the transaction. Ensure that the change date you are trying to set is indeed later than the valid from date.
  
  
  Adjust Dates: If the change date is incorrect, modify it to a