WBS element & can only be assigned to one grouping WBS element

Message type: E = Error

Message class: GRPG - Grouping/Pegging for Individual Project Planning

Message number: 124

Message text: WBS element & can only be assigned to one grouping WBS element



What causes this issue?

You want to assign WBS element &v1& to a type '1' grouping WBS element.
Type '1' requires unique assignment; WBS element &v1& is already
assigned to grouping WBS element &v2&.


System Response

INCLUDE NA_ALLG_NOVERARBEITUNG OBJECT DOKU ID TX


How to fix this error?

Either cancel the assignment or delete the existing assignment to
grouping WBS element &V2&.

Error message extract from SAP system. Copyright SAP SE.