How To Fix AD301 - Foreign key &-& (relationship 'CLAS' --> classified field/value)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 301

• Message text: Foreign key &-& (relationship 'CLAS' --> classified field/value)

With relationship type CLAS, you should always specify the name of the
classifying field from the check table and its possible (classifying)
value. The division of the entity into subentities is not clear unless
both attributes are specified (relationship type CLAS).

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Example:
Classification of documents into purchasing and sales document classes,
where one document cannot belong to both classes at the same time. A
classifying field is the document type which clearly indicates the
class to which a document belongs. Possible values for the classifying
field (document type) are 'E' (purchasing document) and 'V' (sales
document).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD301 - Foreign key &-& (relationship 'CLAS' --> classified field/value) ?

  The SAP error message AD301 typically indicates a problem with a foreign key relationship in the context of classification. Specifically, it suggests that there is an issue with the classification of an object, where the system is unable to find a valid entry for the specified foreign key relationship.
  Cause:
  
  Missing Classification Data: The object you are trying to classify may not have the necessary classification data or may be missing the required entries in the classification tables.
  Incorrect Configuration: The configuration of the classification system may not be set up correctly, leading to inconsistencies in the foreign key relationships.
  Data Inconsistency: There may be inconsistencies in the data, such as missing or incorrect values in the fields that are supposed to be linked by the foreign key.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the classification data, leading to this error.
  
  Solution:
  
  Check Classification Data: Verify that the object you are trying to classify has the necessary classification data. Ensure that all required fields are filled out correctly.
  Review Configuration: Check the configuration of the classification system in SAP. Ensure that the foreign key relationships are correctly defined and that the necessary tables are populated.
  Data Consistency Check: Run consistency checks on the classification data to identify any missing or incorrect entries. You can use transaction codes like CL02 (Change Class) or CL03 (Display Class) to review the classes and their attributes.
  Authorization Check: Ensure that the user has the necessary authorizations to access and modify classification data. You may need to consult with your SAP security team to verify this.
  Debugging: If the issue persists, consider debugging the process to identify where the error is occurring. This may require technical expertise in ABAP programming.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class) for managing classification data.
  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.
  Documentation: Review SAP documentation on classification and foreign key relationships to better understand how they work and how to troubleshoot issues.
  
  If the problem continues after trying these solutions, it may be beneficial to consult with your SAP support team or reach out to SAP directly for further assistance.