How To Fix SOS_MAPPING158 - Attributes with direct type specified are not valid in persistent classes

SAP Error Message - Details

• Message type: E = Error

• Message class: SOS_MAPPING - Object Services: Persistence Mapping for Messages

• Message number: 158

• Message text: Attributes with direct type specified are not valid in persistent classes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SOS_MAPPING158 - Attributes with direct type specified are not valid in persistent classes ?

  The SAP error message SOS_MAPPING158 indicates that there is an issue with the mapping of attributes in a persistent class, specifically that attributes with a direct type specified are not valid. This typically occurs in the context of ABAP programming, particularly when dealing with persistent objects in the SAP Business Object Processing Framework (BOPF) or similar frameworks.
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Invalid Data Type: The attribute in question is defined with a direct type (like CHAR, NUMC, etc.) that is not allowed in the context of a persistent class. Persistent classes typically require attributes to be defined with reference types or specific data types that are compatible with the persistence layer.
  
  
  Incorrect Mapping: The mapping of the attribute to the database table or structure may be incorrect. This can happen if the attribute is not properly defined in the data model or if there are inconsistencies between the class definition and the underlying database schema.
  
  
  Framework Limitations: Some frameworks or versions of SAP may have specific limitations on the types of attributes that can be used in persistent classes.
  
  
  Solution:
  To resolve the SOS_MAPPING158 error, you can take the following steps:
  
  
  Check Attribute Definitions: Review the definitions of the attributes in your persistent class. Ensure that they are defined using valid types. If you are using direct types, consider changing them to reference types or compatible types that are allowed in persistent classes.
  
  
  Review Data Model: Ensure that the data model is correctly defined and that the attributes are properly mapped to the corresponding database fields. Check for any discrepancies between the class definition and the database schema.
  
  
  Use Compatible Types: If you need to store simple data types, consider using structures or reference types that are compatible with the persistence framework.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific framework you are using (e.g., BOPF, CDS views) to understand the requirements and limitations regarding attribute types in persistent classes.
  
  
  Testing: After making changes, test the application to ensure that the error is resolved and that the functionality works as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Community Forums: Engage with the SAP Community or forums where developers discuss similar issues. You may find additional insights or solutions from others who have encountered the same error.
  ABAP Development Guidelines: Familiarize yourself with best practices for ABAP development, especially regarding data modeling and persistence.
  
  By following these steps, you should be able to identify the cause of the SOS_MAPPING158 error and implement a suitable solution.