How To Fix SADL_GW019 - Generated ID contains a bad filter: '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW -

• Message number: 019

• Message text: Generated ID contains a bad filter: '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW019 - Generated ID contains a bad filter: '&1' ?

  The SAP error message SADL_GW019 indicates that there is an issue with a generated ID that contains a bad filter. This typically occurs in the context of the SAP ABAP programming model for SAP Fiori applications, particularly when using the SAP Data Access Layer (SADL) for OData services.
  Cause:
  The error is usually caused by one of the following issues:
  
  Invalid Filter Syntax: The filter expression used in the OData query may contain invalid characters or syntax that the system cannot interpret.
  Unsupported Filter Operations: The filter may be using operations or functions that are not supported by the underlying data model or the OData service.
  Data Type Mismatch: The filter may be trying to compare incompatible data types, leading to an invalid query.
  Incorrectly Defined Annotations: If the annotations in the CDS (Core Data Services) view are not correctly defined, it can lead to issues when generating the OData service.
  
  Solution:
  To resolve the SADL_GW019 error, you can take the following steps:
  
  
  Check the Filter Syntax: Review the filter expression being used in the OData request. Ensure that it adheres to the correct syntax and does not contain any invalid characters.
  
  
  Validate Data Types: Ensure that the data types used in the filter match the data types defined in the underlying data model. For example, if you are filtering on a date field, ensure that the value being passed is in the correct date format.
  
  
  Review CDS Annotations: If you are using CDS views, check the annotations to ensure they are correctly defined. Look for any potential issues in the annotations that could affect the OData service generation.
  
  
  Test with Simplified Filters: If possible, simplify the filter to isolate the issue. Start with a basic filter and gradually add complexity to identify which part of the filter is causing the error.
  
  
  Check for Known Issues: Consult SAP Notes or the SAP Community for any known issues related to the specific version of SAP you are using. There may be patches or updates that address this error.
  
  
  Debugging: If you have access to the backend, consider debugging the OData service to see how the filter is being processed and where it might be failing.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for SADL and OData services for more details on valid filter expressions and supported operations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  SAP Notes: Search for relevant SAP Notes that might provide additional insights or fixes related to this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the SADL_GW019 error.