How To Fix E2305 - No foreign key is defined for the relationship

E2305 - Overview

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 305

• Message text: No foreign key is defined for the relationship

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message E2305 - No foreign key is defined for the relationship ?

  The SAP error message E2305, which states "No foreign key is defined for the relationship," typically occurs in the context of data modeling or database design within the SAP environment, particularly when working with ABAP Dictionary or when defining relationships between database tables.
  
  Cause:
  This error arises when you attempt to create or use a relationship between two database tables (or entities) without having a foreign key constraint defined. A foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table. The absence of a foreign key means that the system cannot enforce referential integrity between the two tables.
  
  Solution:
  To resolve this error, you need to define a foreign key relationship between the tables involved. Here are the steps to do this:
  
  
  Access the Data Dictionary (SE11):
  
  Go to transaction code SE11 in the SAP GUI.
  
  
  
  Select the Table:
  
  Enter the name of the table that you want