Message type: E = Error
Message class:  RS2HANA_VIEW - HANA Views for BW Objects 
Message number: 156
Message text: &1: Hierarchy &2 not valid for the external SAP HANA view with hierarchy
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.
The SAP error message RS2HANA_VIEW156 typically indicates that there is an issue with a hierarchy that is being referenced in an external SAP HANA view. This error can occur in scenarios where the hierarchy is either not defined correctly, is missing, or is not compatible with the expected structure of the HANA view.
Cause: Hierarchy Not Defined: The hierarchy specified in the error message may not be defined in the system. Incorrect Hierarchy Type: The hierarchy might not be of the correct type that the HANA view expects. Inconsistent Data: There may be inconsistencies in the data that prevent the hierarchy from being recognized. Authorization Issues: The user may not have the necessary authorizations to access the hierarchy. Transport Issues: If the hierarchy was recently transported from another system, it may not have been transported correctly.
Solution: Check Hierarchy Definition: Verify that the hierarchy referenced in the error message is correctly defined in the system. You can do
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