How To Fix CY344 - Network &/&: The start date is after the constraint date

CY344 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 344

• Message text: Network &/&: The start date is after the constraint date

What causes this issue?

The start date for the operation has the constraint that it should not
be after a particular date (constraint date). However the date when
you want to dispatch the operation is after the constraint date.
Therefore it is not possible to dispatch the operation.

How to fix this error?

You should enter a date which is before the constraint date in the
network.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY344 - Network &/&: The start date is after the constraint date ?

  The SAP error message CY344 ("Network &/&: The start date is after the constraint date") typically occurs in the context of project management and scheduling within SAP, particularly when working with networks in the Project System (PS) module or in Production Planning (PP). This error indicates that there is a scheduling conflict where the start date of a network activity is set to begin after a defined constraint date, which is not allowed.
  
  Cause:
  
  Constraint Date: The constraint date is a predefined date that limits when an activity can start or finish. If the start date of the activity is set to a date that is later than this constraint date, the system will trigger this error.
  Incorrect Scheduling: The scheduling of activities may have been done incorrectly, either manually or through automated scheduling processes.
  Dependencies: There may be dependencies or relationships between activities that have not been properly defined, leading to scheduling conflicts.
  Changes