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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message AO285 - Assignment to original req. &1 not allowed - overlap of versions &2 &3 ?

  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 the validity periods of the original requirement and the new version you are trying to assign. Ensure that there is no overlap in the dates.
  Adjust Versions: If there is an overlap, you may need to adjust the validity periods of either the original requirement or the new version to ensure they do not conflict.
  Use Different Versions: If the requirement needs to be assigned to a different version, consider creating a new version that does not overlap with the existing ones.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing versions in your particular module (PS or CO).
  Check Configuration: If the issue persists, check the configuration settings related to version management in your SAP system. You may need to consult with your SAP Basis or configuration team.
  Data Consistency Check: Run data consistency checks to ensure that there are no underlying issues with the project or controlling data.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CJI3 (Project Actual Line Items) to analyze the project structure and requirements.
  User Authorization: Ensure that you have the necessary authorizations to make changes to requirements and versions in the system.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.