How To Fix DI755 - Field &-& is checked against multiple key fields using join condition

DI755 - Overview

• Message type: E = Error

• Message class: DI - Dictionary messages: Indexes

• Message number: 755

• Message text: Field &-& is checked against multiple key fields using join condition

What causes this issue?

Every secondary table of a lock object must be connected to a base
table above it in the hierarchy by a join condition. This join
condition must be implemented by 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. No base table field may be checked
against several different key fields by the join condition (as foreign
key field).
The base table field named does not conform to this requirement.

System Response

The action is cancelled.

How to fix this error?

Construct 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 DI755 - Field &-& is checked against multiple key fields using join condition ?

  The SAP error message DI755 indicates that there is an issue with a data inconsistency or a problem with the join condition in a data model or query. This error typically arises when a field is being checked against multiple key fields, which can lead to ambiguity in the data retrieval process.
  
  Cause:
  
  Multiple Key Fields: The error occurs when a field is being validated against multiple key fields in a join condition. This can happen if the data model or query is not properly defined, leading to confusion about which key field should be used for the validation.
  Data Model Issues: There may be issues in the underlying data model, such as incorrect relationships or joins between tables.
  Query Design: If you are using a query or report that involves multiple tables, the join conditions may not be set up correctly, leading to this error.
  
  
  Solution:
  
  Review Join Conditions: Check the join conditions in your