How To Fix DPR_SHARED242 - &1 &2: Constraint conflicts with predecessor/successor (&3 &4)

SAP Error Message - Details

• Message type: E = Error

• Message class: DPR_SHARED - Development Projects: Messages for Shared Objects

• Message number: 242

• Message text: &1 &2: Constraint conflicts with predecessor/successor (&3 &4)

What causes this issue?

You have either set a start constraint for the task &V1& &V2& and the
constraint date conflicts with the predecessor relationship for &V3&
&V4& or you have set a finish constraint for the task &V1& &V2& and the
constraint date conflicts with the successor relationship for &V3& &V4&.
The start or finish constraint date reduces the lag that is defined
between this task and the corresponding predecessor or successor task.
This is not permitted.
Therefore, there is a <ZH>scheduling conflict</>; the system cannot take
the influence of the relationship into account in scheduling.

System Response

The constraint is reduced.

How to fix this error?

Check the data of the predecessor or successor relationships for &V3&
&V4& and the start or finish constraint for task &V1& &V2&.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DPR_SHARED242 - &1 &2: Constraint conflicts with predecessor/successor (&3 &4) ?

  The SAP error message DPR_SHARED242 indicates that there is a constraint conflict in a project or task scheduling scenario. This typically occurs in the context of project management within SAP, particularly when using the SAP Project System (PS) or SAP Portfolio and Project Management (PPM) modules. The error message provides information about the conflicting predecessor or successor relationships between tasks.
  
  Cause:
  The error message DPR_SHARED242 is triggered when:
  
  Constraint Conflicts: There are conflicting constraints set on a task that prevent it from being scheduled correctly in relation to its predecessor or successor tasks. For example, if a task is set to start on a specific date but its predecessor is scheduled to finish later than that date, a conflict arises.
  Incorrect Task Relationships: The relationships (dependencies) between tasks may not be correctly defined, leading to scheduling issues.
  Resource Availability: If resources assigned to tasks are not available during the scheduled time, it can also lead