How To Fix SADL_GW_V4_MODEL021 - Table line type &1 not supported.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_V4_MODEL - OData Version 4 Enabling: Model Messages

• Message number: 021

• Message text: Table line type &1 not supported.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_V4_MODEL021 - Table line type &1 not supported. ?

  The SAP error message SADL_GW_V4_MODEL021 with the description "Table line type &1 not supported" typically occurs in the context of the SAP Gateway and the SAP ABAP programming model for SAP Fiori applications. This error indicates that the system encountered a table line type that is not supported in the context of the operation being performed, often related to data retrieval or manipulation.
  Causes:
  
  Unsupported Data Type: The table line type specified in the error message is not recognized or supported by the SAP Gateway or the OData service being used.
  Model Configuration Issues: There may be issues with the configuration of the data model in the SAP Gateway service, such as incorrect definitions or mappings.
  Incompatible Data Structures: The data structure being used may not be compatible with the expected input or output formats of the OData service.
  Version Mismatch: There could be a mismatch between the versions of the SAP components being used, leading to incompatibility issues.
  
  Solutions:
  
  Check Data Model Configuration: Review the configuration of the data model in the SAP Gateway service. Ensure that all table line types are correctly defined and supported.
  Update OData Service: If you have made changes to the underlying data model or structures, regenerate and activate the OData service to ensure that it reflects the latest changes.
  Review Data Types: Ensure that the data types used in your ABAP code and the OData service are compatible. If necessary, modify the data types to match the expected formats.
  Debugging: Use transaction codes like SE80 or SE11 to analyze the data model and check for any inconsistencies. You can also use transaction SICF to check the service configuration.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of SAP you are using to see if there are any known issues or patches available.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the error details and context in which it occurs.
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is a technology that enables the connection of devices and applications to SAP systems via OData services.
  OData Services: OData (Open Data Protocol) is a standard protocol used for building and consuming RESTful APIs. In SAP, OData services are often used to expose business data to Fiori applications.
  ABAP Development: Understanding ABAP programming and data dictionary concepts is crucial for troubleshooting issues related to data types and structures in SAP.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.