How To Fix AD734 - Foreign key &-& (indicate the foreign key type)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 734

• Message text: Foreign key &-& (indicate the foreign key type)

What causes this issue?

A foreign key must be flagged either as a semantic foreign key or as a
screen foreign key. In the case of a screen foreign key, a check is
always made for any input to the screen through the mask processor.
This foreign key is always found with internal tables (without under-
lying database table) and also with foreign keys that are contained
completely within a semantic foreign key. Semantic foreign keys are
part of the data model and are further identified by their dependency
factor and cardinality. Apart from the check on screen entry, they
imply referential integrity conditions.

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?

Please flag this foreign key as semantic foreign key or screen foreign
key.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD734 - Foreign key &-& (indicate the foreign key type) ?

  The SAP error message AD734 typically indicates a foreign key constraint violation in the context of data entry or data processing. This error occurs when an attempt is made to insert or update a record in a database table that references a foreign key, but the corresponding record in the referenced table does not exist.
  Cause:
  
  Missing Record: The most common cause is that the record you are trying to reference in the foreign key does not exist in the parent table.
  Incorrect Data Entry: There may be a typo or incorrect value being entered that does not match any existing record in the parent table.
  Data Consistency Issues: There may be issues with data consistency, such as records being deleted or not properly maintained.
  Configuration Issues: Sometimes, the foreign key relationships may not be correctly defined in the database schema.
  
  Solution:
  
  Check Parent Table: Verify that the record you are trying to reference exists in the parent table. If it does not exist, you will need to create it before you can reference it.
  Correct Data Entry: Ensure that the data being entered matches the existing records in the parent table. Double-check for typos or incorrect values.
  Data Integrity Checks: Run data integrity checks to ensure that all foreign key relationships are valid and that there are no orphaned records.
  Review Foreign Key Configuration: If you have access to the database schema, review the foreign key constraints to ensure they are correctly defined.
  Consult Documentation: If you are unsure about the foreign key relationships, consult the SAP documentation or your system administrator for guidance.
  
  Related Information:
  
  Foreign Key Types: Foreign keys can be classified into different types, such as:
  
  Simple Foreign Key: A single column that references a primary key in another table.
  Composite Foreign Key: A combination of two or more columns that together reference a primary key in another table.
  
  
  Transaction Codes: You may use transaction codes like SE11 (Data Dictionary) to view and manage database tables and their relationships.
  Debugging: If you have access to debugging tools, you can trace the program or transaction that is causing the error to get more context on the issue.
  
  If the problem persists after checking these areas, it may be beneficial to consult with your SAP support team or a database administrator for further assistance.