How To Fix BT400 - First date is later than second date

SAP Error Message - Details

• Message type: E = Error

• Message class: BT - Background processing messages

• Message number: 400

• Message text: First date is later than second date

What causes this issue?

The first date is greater than the second one.

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?

Repeat your entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BT400 - First date is later than second date ?

  The SAP error message BT400 ("First date is later than second date") typically occurs when there is a date validation issue in a transaction or process where two dates are compared, and the first date is found to be later than the second date. This can happen in various contexts, such as when entering date ranges for reports, scheduling, or planning activities.
  Cause:
  
  Incorrect Date Entry: The user may have mistakenly entered the dates in the wrong order.
  System Configuration: There may be a configuration issue in the system that affects how dates are interpreted.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in date formats or values.
  User Error: Users may not be aware of the correct date format or the expected order of dates.
  
  Solution:
  
  Check Date Entries: Review the dates entered in the transaction. Ensure that the first date is indeed earlier than the second date.
  Correct Format: Make sure that the dates are in the correct format as expected by the SAP system (e.g., DD/MM/YYYY or MM/DD/YYYY).
  Validation Logic: If you are a developer or have access to the backend, check any custom validation logic that may be causing this error.
  User Training: Provide training or documentation to users to help them understand how to correctly enter date ranges.
  System Configuration: If the issue persists, consult with your SAP Basis or configuration team to check for any system settings that may need adjustment.
  
  Related Information:
  
  Transaction Codes: The error can occur in various transaction codes, so identifying the specific transaction can help narrow down the issue.
  SAP Notes: Check SAP Notes for any known issues or patches related to date handling in your version of SAP.
  Debugging: If you have access, you can debug the transaction to see where the error is being triggered.
  User Forums: Consider checking SAP community forums or support channels for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the BT400 error and ensure that date entries are correctly validated in your SAP system.