How To Fix MD108 - Finish date lies before the start date

MD108 - Overview

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 108

• Message text: Finish date lies before the start date

What causes this issue?

The end date of the validity period lies before the start date.

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?

Error message extract from SAP system. Copyright SAP SE.

MD108 - Details

• The SAP error message MD108, which states "Finish date lies before the start date," typically occurs in the context of production planning or scheduling within the SAP system. This error indicates that there is a discrepancy in the dates defined for a particular operation or task, where the finish date is set to an earlier time than the start date, which is logically incorrect.
  
  Cause:
  
  Incorrect Date Entry: The most common cause is manual entry errors where the finish date is mistakenly entered before the start date.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in date formats or values.
  Scheduling Conflicts: If there are overlapping operations or tasks that have been scheduled incorrectly, it can lead to this error.
  Master Data Issues: Problems with the master data, such as incorrect lead times or production versions, can also lead to this error.
  
  
  Solution:
  
  Check Date Entries: Review the start and