Making a DFF mandatory on Supplier Registration Page depending on the Inviting Procurement BU

Summary:

Hello,

The customer wants "Local Language Name" field to be made mandatory only if the Inviting Procurement BU = SolarEdge HQ IL and Taxpayer Country = Israel .

We have a binding parameter in Expression Builder for the Taxpayer Country (bindings.TaxRegCountryCode1.inputValue == 'IL').

However, there is no binding parameter for the inviting Procurement BU.

Could you please inform me how the inviting procurement BU condition can be added ?

Thanks in advance.

Regards,

Sinem