How To Fix SWDP_WB_TOOL815 - &1 is not a valid parent element for &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

• Message number: 815

• Message text: &1 is not a valid parent element for &2

What causes this issue?

Element &V2& is aggregated through aggregation &V3& by the element &V1&.
This parent relationship, however, is not allowed since this aggregation
is not defined for &V1&.

System Response

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

How to fix this error?

&V2& must either be assigned under a suitable element so that the parent
relationship through aggregation &V3& is correct or it must be deleted.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.