How To Fix DPR_PARTICIPANT006 - You cannot define the person responsible for &1 &2; reason &3

DPR_PARTICIPANT006 - Overview

• Message type: E = Error

• Message class: DPR_PARTICIPANT - Roles: Messages

• Message number: 006

• Message text: You cannot define the person responsible for &1 &2; reason &3

What causes this issue?

You did not open the project element &V1& &V2& via the <LS>Projects</>
initial view and cannot define the person responsible for one of the
following reasons:
The actual project element cannot be changed (reason 1)
The role cannot be switched to change mode (reason 2)
The resource was ordered externally (reason 3).

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

In this case, it is not possible to define the person responsible for
reason &V3&.

System Response

The person responsible is not changed.

How to fix this error?

Open the project in the project view in change mode or try to make the
change again later on.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

DPR_PARTICIPANT006 - Details

• The SAP error message DPR_PARTICIPANT006 typically occurs in the context of project management within the SAP system, particularly when dealing with project participants or roles. This error indicates that there is an issue with defining a person responsible for a specific project element, and it provides a reason for the failure.
  
  Cause:
  The error message DPR_PARTICIPANT006 can be triggered by several factors, including:
  
  Invalid or Inactive User: The user ID you are trying to assign as the responsible person may be inactive or not valid in the system.
  Role Restrictions: The user may not have the necessary authorizations or roles assigned to take on the responsibility for the specified project element.
  Project Status: The project or project element may be in a status that does not allow changes to the responsible person.
  Missing Data: Required fields or data related to the project or participant may be missing or incorrectly filled out.
  
  Configuration Issues: There may be configuration