How To Fix AO285 - Assignment to original req. &1 not allowed - overlap of versions &2 &3

AO285 - Overview

• Message type: E = Error

• Message class: AO - Appropriation requests - Master data / Customizing

• Message number: 285

• Message text: Assignment to original req. &1 not allowed - overlap of versions &2 &3

What causes this issue?

You want to assign appropriation request &V1& as the original
appropriation request.
However, alternate request &V2& is assigned to fiscal year &V3& and
version &V4&, to which &V1& is also assigned.

System Response

Appropriation request &V1& cannot be used as the original appropriation
request.

How to fix this error?

Enter a different original appropriation request, that does not have
any overlap of version assignments.
Or, correct the version assignment on the appropriation request
yourself, and then assign the original appropriation request again.
Note:
When you use alternates, only one of the alternates can be assigned to
a given combination of version and fiscal year.

Error message extract from SAP system. Copyright SAP SE.

AO285 - Details

• The SAP error message AO285, which states "Assignment to original req. &1 not allowed - overlap of versions &2 &3," typically occurs in the context of SAP's Project System (PS) or Controlling (CO) modules. This error indicates that there is an attempt to assign a new version of a requirement to an original requirement, but the versions overlap in a way that is not permitted by the system.
  
  Cause:
  
  Version Overlap: The error is primarily caused by trying to assign a new version of a requirement to an original requirement when the time periods of the two versions overlap. Each version of a requirement is expected to have distinct time frames.
  Incorrect Configuration: There may be configuration settings in the system that do not allow for overlapping versions.
  Data Integrity Issues: There could be issues with the data integrity in the project or controlling objects, leading to conflicts in version assignments.
  
  
  Solution:
  
  Check Version Dates: Review