How To Fix /CPD/CL_MSG157 - Parent attribute should be a primary key; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: /CPD/CL_MSG -

• Message number: 157

• Message text: Parent attribute should be a primary key; see long text

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /CPD/CL_MSG157 - Parent attribute should be a primary key; see long text ?

  The SAP error message /CPD/CL_MSG157 indicates that there is an issue with the configuration of a parent attribute in a data model or a similar structure within SAP. Specifically, the error states that the parent attribute should be defined as a primary key. This typically occurs in contexts where hierarchical data structures or parent-child relationships are being defined, such as in SAP BW (Business Warehouse) or SAP HANA.
  
  Cause:
  The error is triggered when:
  
  A parent attribute is not set as a primary key in the data model.
  The system expects the parent attribute to uniquely identify records in the parent table, but it is not configured as such.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Data Model Configuration:
  
  Navigate to the data model or the relevant configuration where the parent attribute is defined.
  Ensure that the parent attribute is correctly defined and is intended to be a primary key.
  
  
  
  Define the Parent Attribute as