How To Fix RS2HANA_VIEW149 - External SAP HANA view: Use of optional variables not supported

RS2HANA_VIEW149 - Overview

• Message type: E = Error

• Message class: RS2HANA_VIEW - HANA Views for BW Objects

• Message number: 149

• Message text: External SAP HANA view: Use of optional variables not supported

What causes this issue?

Per selection, per characteristic only one variable with entry type
optional is allowed.

System Response

External SAP HANA view is not supported.

How to fix this error?

Change the entry type of the variable or remove the variable.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

RS2HANA_VIEW149 - Details

• The error message "RS2HANA_VIEW149 External SAP HANA view: Use of optional variables not supported" typically occurs in the context of SAP BW/4HANA or SAP BW on HANA when you are trying to use optional variables in a HANA view that is being consumed by a BW query or report. This error indicates that the HANA view you are trying to use does not support optional variables, which can lead to issues when trying to execute queries that rely on these variables.
  
  Cause:
  
  Optional Variables: The error arises because the HANA view is designed in such a way that it does not support optional variables. Optional variables are those that can be left blank or not provided when executing a query.
  HANA View Design: The design of the HANA view may not accommodate the logic required to handle optional variables, which can lead to runtime errors when the query is executed.
  BW Query Configuration: The