How To Fix DI797 - Inconsistent join of basis table & to predecessor table & (check field &)

SAP Error Message - Details

• Message type: E = Error

• Message class: DI - Dictionary messages: Indexes

• Message number: 797

• Message text: Inconsistent join of basis table & to predecessor table & (check field &)

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 above it in the
hierarchy as check table.
The foreign key specified for the join condition named is not active in
the ABAP/4 Dicitionary.

System Response

The action is cancelled.

How to fix this error?

Build the hierarchy of the lock object correctly. Observe the
<DS:TX.DDDOK_ENQU_REQUIREMENTS>requirements for the join conditions of
a lock object</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DI797 - Inconsistent join of basis table & to predecessor table & (check field &) ?

  The SAP error message DI797 indicates an inconsistency in the join between a basis table and its predecessor table. This typically occurs in the context of data modeling or when working with data sources in SAP BW (Business Warehouse) or SAP HANA. The error suggests that there is a mismatch or inconsistency in the data structure or relationships defined between the tables.
  Cause:
  
  Data Model Inconsistency: The join conditions between the basis table and the predecessor table may not be correctly defined, leading to inconsistencies in the data model.
  Missing or Incorrect Keys: The key fields used for joining the tables may be missing or incorrectly defined, causing the join to fail.
  Data Integrity Issues: There may be issues with the data itself, such as missing records in one of the tables that are required for the join.
  Changes in Data Structure: If there have been recent changes to the data model or the underlying tables, it may lead to inconsistencies if the changes were not properly propagated.
  
  Solution:
  
  Check Join Conditions: Review the join conditions defined between the basis table and the predecessor table. Ensure that the fields used for joining are correctly specified and that they exist in both tables.
  Validate Key Fields: Ensure that the key fields used for the join are present and correctly defined in both tables. If necessary, adjust the data model to include the required fields.
  Data Consistency Check: Perform a data consistency check to identify any missing or inconsistent records in the tables involved. This may involve running queries to verify that all expected records are present.
  Rebuild Data Model: If the issue persists, consider rebuilding the data model or the specific data source to ensure that all relationships and joins are correctly defined.
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance related to the version of SAP you are using, as there may be version-specific considerations.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Data Modeling Tools: If you are using tools like SAP BW Modeling Tools or SAP HANA Studio, ensure that you are familiar with the features and functionalities that help in defining and validating joins.
  Testing Environment: If possible, replicate the issue in a testing environment to troubleshoot without affecting production data.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the DI797 error in your SAP environment.