How To Fix RAP_CMP_CHECKS090 - Length decreased for property &1 of entity type &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: RAP_CMP_CHECKS - RAP Compatibility Checks Messages

• Message number: 090

• Message text: Length decreased for property &1 of entity type &2.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RAP_CMP_CHECKS090 - Length decreased for property &1 of entity type &2. ?

  The SAP error message RAP_CMP_CHECKS090 indicates that there is a mismatch in the length of a property in an entity type within the context of the SAP RAP (Rapid Application Programming) model. This error typically arises when the length of a property in the data model is decreased in a way that is not compatible with existing data or definitions.
  Cause:
  
  Property Length Change: The length of a property in the entity type has been reduced. For example, if a property was originally defined as a string with a length of 50 characters and is now defined as a string with a length of 30 characters, this will trigger the error.
  Data Incompatibility: Existing data in the database may exceed the new length definition, leading to potential data loss or truncation.
  Model Definition Issues: Changes in the data model that are not properly reflected in the underlying database schema or in the service definitions can also lead to this error.
  
  Solution:
  
  Review Changes: Check the changes made to the entity type and its properties. Ensure that the length of the property is appropriate and does not conflict with existing data.
  Adjust Length: If the length was decreased unintentionally, consider reverting it to the original length or to a length that accommodates the existing data.
  Data Migration: If you need to decrease the length for a valid reason, ensure that all existing data is either truncated or migrated to fit the new length constraints before making the change.
  Update Database Schema: If the change is intentional, ensure that the database schema is updated accordingly, and any necessary data migration scripts are executed to handle existing data.
  Check Service Definitions: Ensure that any service definitions or annotations that reference the property are also updated to reflect the new length.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for RAP and data modeling to understand best practices and guidelines for defining entity types and properties.
  SAP Community: Engage with the SAP Community forums for insights and experiences from other developers who may have encountered similar issues.
  Testing: After making changes, thoroughly test the application to ensure that the changes do not introduce new issues and that the application behaves as expected.
  
  By following these steps, you should be able to resolve the RAP_CMP_CHECKS090 error and ensure that your entity type definitions are consistent and compatible with your data model.