How To Fix E2192 - Field assignment for foreign key &-& ambiguous (check proposal)

SAP Error Message - Details

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 192

• Message text: Field assignment for foreign key &-& ambiguous (check proposal)

What causes this issue?

The structure of the foreign key definition is ambiguous. When creating
the foreign key, all the key fields of the check table must be assigned
to the foreign key fields (fields of the table itself to be checked or
possibly those of a foreign table). The assignment is made using the
common domain of the pair of fields.

System Response

The system automatically suggests an assignment. There are several
selection possibilities for one or more check table fields in the
foreign key table. One of them was suggested.

How to fix this error?

Check and possibly correct the field assignment.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E2192 - Field assignment for foreign key &-& ambiguous (check proposal) ?

  The SAP error message E2192, which states "Field assignment for foreign key &-& ambiguous (check proposal)," typically occurs when there is an issue with the foreign key assignment in a database table or structure. This error indicates that the system has encountered ambiguity in the foreign key relationship, which can arise from several factors.
  Causes:
  
  Ambiguous Foreign Key Relationships: The foreign key field may be linked to multiple fields in the referenced table, leading to confusion about which field should be used.
  Multiple Proposals: If there are multiple proposals for the foreign key assignment, the system cannot determine which one to use.
  Incorrect Data Dictionary Definitions: The data dictionary definitions for the tables involved may not be correctly set up, leading to conflicts.
  Changes in Table Structure: If the structure of the tables has been modified (e.g., fields added or removed), it may lead to ambiguity in foreign key assignments.
  Inconsistent Naming Conventions: If the naming conventions for fields are not consistent, it may lead to confusion in identifying the correct foreign key.
  
  Solutions:
  
  Check Foreign Key Assignments: Review the foreign key assignments in the data dictionary (SE11) to ensure that they are correctly defined and not ambiguous.
  Adjust Field Proposals: If there are multiple proposals for the foreign key, you may need to adjust the field proposals to clarify which field should be used.
  Review Table Structures: Ensure that the structures of the involved tables are correctly defined and that there are no inconsistencies.
  Use Transaction SE11: Go to transaction SE11 (Data Dictionary) and check the foreign key relationships for the relevant tables. Make sure that the foreign key fields are correctly assigned and that there are no duplicates.
  Consult Documentation: Review any relevant documentation or notes related to the specific tables and their relationships to ensure that you are following the correct guidelines.
  Test Changes: After making adjustments, test the changes in a development environment to ensure that the error is resolved before moving to production.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE37 (Function Module), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If the issue persists, consider using debugging tools to trace the execution and identify where the ambiguity arises.
  
  If you continue to experience issues after following these steps, it may be beneficial to consult with an SAP Basis or ABAP consultant who can provide more in-depth analysis and support.