How To Fix 40594 - Check either duration or start/finish date

40594 - Overview

• Message type: E = Error

• Message class: 40 - Messages for Process Orders

• Message number: 594

• Message text: Check either duration or start/finish date

What causes this issue?

You have tried to check the duration and the start/finish 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?

Check either the duration or the start/finish date.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 40594 - Check either duration or start/finish date ?

  The SAP error message 40594, which states "Check either duration or start/finish date," typically occurs in the context of project management or scheduling within SAP, particularly in modules like Project System (PS) or Production Planning (PP). This error indicates that there is an inconsistency in the scheduling parameters of a task or project.
  
  Cause:
  The error can arise due to several reasons:
  
  Inconsistent Dates: The start and finish dates of a task may not align with the specified duration. For example, if the duration is set to 5 days, but the finish date is set to a date that is not 5 days after the start date, this inconsistency will trigger the error.
  Missing Data: Either the duration or the start/finish date may not be filled in, leading to an inability for the system to calculate the other parameter.
  Incorrect Time Units: The duration might be specified in a unit that does not match the