How To Fix AD293 - Foreign key &-& (foreign key not generated)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 293

• Message text: Foreign key &-& (foreign key not generated)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AD293 - Foreign key &-& (foreign key not generated) ?

  The SAP error message AD293 indicates that a foreign key relationship could not be generated for a specified field in a database table. This typically occurs during the creation or modification of a table in the Data Dictionary (SE11) when the system is unable to establish a foreign key relationship due to various reasons.
  Causes of Error AD293
  
  
  Non-Existing Primary Key: The table that you are trying to reference with the foreign key does not have a primary key defined. Foreign keys must reference a primary key in another table.
  
  
  Data Type Mismatch: The data types of the fields in the two tables (the foreign key and the primary key) do not match. For example, if one field is defined as CHAR and the other as INT, the foreign key cannot be established.
  
  
  Field Length Mismatch: Even if the data types match, the lengths of the fields must also be compatible. For instance, a CHAR(10) field cannot reference a CHAR(20) field.
  
  
  Table Not Active: The referenced table may not be active or may not exist in the system.
  
  
  Incorrect Table/Field Specification: The specified table or field names may be incorrect or misspelled.
  
  
  Database Constraints: There may be existing constraints or settings in the database that prevent the creation of the foreign key.
  
  
  Solutions to Error AD293
  
  
  Check Primary Key: Ensure that the referenced table has a primary key defined. You can do this by going to the Data Dictionary (SE11) and checking the table definition.
  
  
  Verify Data Types: Compare the data types of the foreign key field and the primary key field. Make sure they are the same (e.g., both should be CHAR, INT, etc.).
  
  
  Check Field Lengths: Ensure that the lengths of the fields are compatible. If necessary, adjust the lengths to match.
  
  
  Activate Tables: If the referenced table is not active, activate it in the Data Dictionary.
  
  
  Correct Table/Field Names: Double-check the names of the tables and fields you are using to ensure they are correct.
  
  
  Review Database Constraints: If there are any database constraints that might be affecting the creation of the foreign key, review and adjust them as necessary.
  
  
  Related Information
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), and SE80 (Object Navigator) to manage and troubleshoot database objects.
  Documentation: Refer to SAP Help documentation for more details on foreign key relationships and data dictionary management.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to foreign key constraints.
  
  By following these steps, you should be able to identify the cause of the AD293 error and implement the necessary solutions to resolve it.