How To Fix APB_FPM_GUIBB013 - Row key for hierarchy is not defined correctly

APB_FPM_GUIBB013 - Overview

• Message type: E = Error

• Message class: APB_FPM_GUIBB -

• Message number: 013

• Message text: Row key for hierarchy is not defined correctly

What causes this issue?

The master column in the hierarchical list GUIBB needs to be defined in
the feeder class GET_DEFINITION method by defining the column types for
the master column. The row key column is incorrectly defined in the
feeder class.

System Response

The system displays an error message at design time.

How to fix this error?

Open the GET_DEFINITION method of the feeder class and define the row
key for the master column correctly.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

APB_FPM_GUIBB013 - Details

• The SAP error message APB_FPM_GUIBB013: Row key for hierarchy is not defined correctly typically occurs in the context of SAP Fiori applications or SAP Web Dynpro applications that utilize the Floorplan Manager (FPM) and the Generic User Interface Building Blocks (GUIBB). This error indicates that there is an issue with the way the hierarchy data is being defined or accessed in the application.
  
  Cause:
  
  Incorrect Hierarchy Definition: The hierarchy structure may not be defined correctly in the underlying data model. This could be due to missing or incorrect key fields that are necessary for identifying rows in the hierarchy.
  Data Inconsistency: The data being fetched may not conform to the expected structure, leading to issues in how the hierarchy is built or displayed.
  
  Configuration Issues: There may be configuration issues in the FPM application or the GUIBB settings that are causing the hierarchy to not be recognized properly.
  Missing Data: If the data source does