Required - BRFPlus expression to return Nationality of BP ... ?

Hi Gurus,

I have a requirement to get the nationality of a confirmed BP and use it in further processing of a BRFPlus application. The problem is, there is no standard expression/ function that does this.

The closest I could find is the expression "IUXP_I_BP_COUNTRY". This will take the confirmed BP as input and return the COUNTRY  of the address.

The technical name of the returned fields is LAND1.

However, our requirement is to get the Nationality field. i.e., BUT000-NATIO.