Message type: E = Error
Message class:  AUR - Unbilled Revenue Reporting and Mass Simulation 
Message number: 073
Message text: DataSource &1 is not permissible for mass simulation
You are using <DS:DE.ROOSOURCER_MSIM>DataSource</> &V1& in
<DS:DE.BISIMTYPE>simulation type</> &v2&. This datasource cannot be used
due to one of the following reasons:
It is not <ZH>active</> in <DS:DE.ROOBJVERS>version</> 'A'.
It does not use the <DS:DE.ROSTRUC>extract structure</>
BIW_ISU_ESTA_SIM.
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 AUR073 indicates that the specified DataSource is not permissible for mass simulation in the context of SAP Advanced Planning and Optimization (APO) or SAP Integrated Business Planning (IBP). This error typically arises when trying to perform mass simulations using a DataSource that is not configured or allowed for such operations.
Cause: DataSource Configuration: The DataSource you are trying to use may not be configured to support mass simulations. This could be due to settings in the DataSource definition or restrictions placed on it. Authorization Issues: The user may not have the necessary authorizations to perform mass simulations with the specified DataSource. Incorrect DataSource: The DataSource being used may not be intended for mass simulation, or it may be a custom DataSource that lacks the necessary attributes.
Solution: Check DataSource Configuration: Verify the configuration of the DataSource in the SAP system. Ensure that it is set up to allow mass simulations. This may involve
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