How To Fix DI802 - For. key field &-& for join cond. to sec. table & not in base table

SAP Error Message - Details

• Message type: E = Error

• Message class: DI - Dictionary messages: Indexes

• Message number: 802

• Message text: For. key field &-& for join cond. to sec. table & not in base table

What causes this issue?

Each secondary table of a lock object must be connected to a base table
above it in the hierarchy with a join condition. This join condition
must be implemented via a foreign key. This foreign key must have the
secondary table as foreign key table and the base table higher in the
hierarchy as check table. Normally the secondary table should be a key
enhancement of its check table.
In this case one of the foreign key fields of the join condition is not
in a base table. This purely hierarchical relationship thus no longer
exists.

System Response

The action is continued with a warning. The outgoing foreign key
relationship has no effect on the functionality of the lock object.

How to fix this error?

If no other error is reported, the lock object is consistent. You
should however check whether the deviation from the hierarchical
structure is desired.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DI802 - For. key field &-& for join cond. to sec. table & not in base table ?

  The SAP error message DI802 typically indicates an issue with a join condition in a database query, specifically when a key field is referenced in a secondary table but is not present in the base table. This can occur in various contexts, such as when working with database views, joins in ABAP programs, or when defining data models in SAP.
  Cause:
  The error arises when:
  
  A join condition is defined between two tables, but the key field specified in the join condition does not exist in the base table.
  There may be a mismatch in the field names or the structure of the tables involved in the join.
  The data model or query is incorrectly defined, leading to references to non-existent fields.
  
  Solution:
  To resolve the DI802 error, you can take the following steps:
  
  
  Check the Join Condition:
  
  Review the join condition in your query or data model. Ensure that the key field specified in the join condition exists in the base table.
  
  
  
  Verify Table Structures:
  
  Use transaction codes like SE11 (Data Dictionary) to check the structure of the base table and the secondary table. Confirm that the key fields are correctly defined and that there are no typos in the field names.
  
  
  
  Adjust the Query or Data Model:
  
  If the key field is indeed missing from the base table, you may need to adjust your query or data model to either include the necessary field in the base table or modify the join condition to use a valid field.
  
  
  
  Check for Changes in Data Model:
  
  If there have been recent changes to the database schema or data model, ensure that your queries and joins are updated accordingly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on the specific context in which the error occurs. This can provide insights into best practices for defining joins and queries.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the query or program again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), SE38 (ABAP Program).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message DI802.
  Debugging: If you are working with ABAP code, consider using the debugger to step through the code and identify where the join condition is being defined.
  
  By following these steps, you should be able to identify the cause of the DI802 error and implement a solution to resolve it.