Error
Error Code:
1328
SAP S/4HANA Error 1328: Missing Projection Attribute
Description
This error occurs in SAP S/4HANA when an SQLScript query attempts to select an attribute (column) that does not exist in the specified table, view, or derived projection. It typically indicates a mismatch between the requested data and the available data structure, often appearing during custom report execution or analytical view processing.
Error Message
ERR_SQLSCRIPT_BUILTIN_MISSING_ATTRIBUTE_IN_PROJECTION
Known Causes
4 known causesTypo in Column Name
A column name in the SQLScript query or view definition is misspelled, causing the system to search for a non-existent attribute.
Missing or Renamed Column
The attribute specified in the projection has been removed, renamed, or was never present in the underlying database table or view.
Incorrect Data Source or Join
The query is referencing an incorrect table/view or has a faulty JOIN condition, leading to a projection that lacks the expected attribute.
Case Sensitivity Mismatch
The database or SQLScript engine is case-sensitive, and the attribute name in the query does not exactly match the case of the actual column name.
Solutions
3 solutions available1. Identify and Correct Missing Projection in CDS View medium
Locate the CDS view causing the error and ensure all required fields are projected.
1
Determine the specific CDS view that is triggering error 1328. This often requires analyzing the error message in the SAP Gateway error log (transaction /IWFND/ERROR_LOG) or the application's trace logs. Look for the object name associated with the error.
2
Open the identified CDS view in ABAP Development Tools (ADT) for Eclipse. Navigate to the CDS view definition.
3
Examine the SELECT list of the CDS view. Ensure that all fields that are expected by the consuming application or the OData service are explicitly included in the projection. The error message indicates that a field is expected but not found in the output of the CDS view.
Example of a correct CDS view projection:
@AbapCatalog.sqlViewName: 'ZCDSVIEW'
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: 'My CDS View'
define view ZCDS_MY_VIEW as select from some_table {
key field1,
field2,
field3
};4
If a field is missing, add it to the SELECT list of the CDS view. For example, if 'field4' is missing and needs to be projected:
@AbapCatalog.sqlViewName: 'ZCDSVIEW'
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: 'My CDS View'
define view ZCDS_MY_VIEW as select from some_table {
key field1,
field2,
field3,
field4 // Added missing field
};
@AbapCatalog.sqlViewName: 'ZCDSVIEW'
@AbapCatalog.compiler.compareFilter: true
@AccessControl.authorizationCheck: #CHECK
@EndUserText.label: 'My CDS View'
define view ZCDS_MY_VIEW as select from some_table {
key field1,
field2,
field3,
field4 // Added missing field
};
5
Activate the modified CDS view. In ADT, right-click the CDS view and select 'Activate'.
6
Redeploy or re-register the OData service that consumes this CDS view to ensure it picks up the changes. This might involve using transaction `/IWFND/MAINT_SERVICE`.
2. Verify OData Service Definition and Field Mapping medium
Ensure the OData service correctly maps to the projected fields of the underlying CDS view.
1
Identify the OData service that is producing error 1328. This can usually be found in the error logs mentioned in the previous solution.
2
Access the OData service definition in SAP Gateway (transaction `/IWFND/MAINT_SERVICE`). Locate the service and check its metadata.
3
Examine the entity types and properties defined for the OData service. Compare these properties against the fields projected by the underlying CDS view. The OData service might be expecting a field that the CDS view is not providing, or there might be a naming mismatch.
4
If the OData service definition is incorrect, you may need to modify the service implementation (e.g., in ABAP class for the service) or regenerate the service from the CDS view if it was generated automatically.
5
If the OData service is generated from the CDS view, ensure that the CDS view itself is correctly defined as per Solution 1. After correcting the CDS view, regenerate the OData service.
6
After making any necessary adjustments to the OData service or its metadata, activate and re-register the service in `/IWFND/MAINT_SERVICE`.
3. Check for Alias and Field Name Discrepancies easy
Investigate potential mismatches between field names in the CDS view and their aliases used in the consuming application or OData service.
1
When defining a CDS view, you can use aliases for fields. The error might occur if the alias used in the OData service or application does not match the alias defined in the CDS view, or if the underlying database field name is different from the projected name.
2
Review the CDS view definition for any field aliases. For instance:
define view ZCDS_MY_VIEW as select from some_table {
key field1 as MyFieldAlias,
field2,
field3
};
define view ZCDS_MY_VIEW as select from some_table {
key field1 as MyFieldAlias,
field2,
field3
};
3
Compare these aliases with the property names defined in the OData service entity. If there's a discrepancy, either adjust the alias in the CDS view or the property name in the OData service to match.
4
Ensure that the `sqlViewName` and `sqlFieldName` annotations are correctly specified if you are explicitly mapping to database columns, although this is less common for standard CDS projections.
5
Activate the CDS view and redeploy the OData service after making corrections.