Is there a way to default Intra - EU Declared Key at Invoice Header Level ?

For Online SII Spanish Tax Reporting, different reports are generated depending on the nature of the supplier. For example, whether the supplier is local or an EU intra-community supplier. This distinction is triggered by specific keys at the invoice header level.

Our objective is not to adjust this field for every invoice but specifically for intra-community suppliers. Is there a way to trace or link these fields back to the supplier level, so we can address this more precisely for those specific cases?

We want to avoid having to input these 2 fields manually at invoice header level every time we book an invoice. Therefore we would like to explore the possibility of defaulting this perhaps at supplier level or any other possibility ?