How To Fix CY346 - Network &/&: The finish date is before the constraint date

CY346 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 346

• Message text: Network &/&: The finish date is before the constraint date

What causes this issue?

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

How to fix this error?

You should change the start date so that the operation finishes before
the constraint date.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY346 - Network &/&: The finish date is before the constraint date ?

  The SAP error message CY346 ("Network &/&: The finish date is before the constraint date") typically occurs in the context of project management and scheduling within SAP, particularly when working with networks and activities in the Project System (PS) module. This error indicates that there is a scheduling conflict where the finish date of a network activity is set to occur before a defined constraint date, which is not allowed.
  
  Cause:
  
  Constraint Date: A constraint date is a specific date that limits when an activity can start or finish. This could be a "Must Start On," "Must Finish On," or "Start No Earlier Than" constraint.
  Scheduling Logic: The scheduling logic in SAP is trying to calculate the finish date based on the defined constraints, but the current settings lead to a situation where the finish date is earlier than the constraint date.
  Incorrect Dates: The dates entered for the activity or the constraints may