Validate regimen fiscal in pay invoice

source/app/models/main.py

@@ -7431,8 +7431,12 @@ class CfdiPagos(BaseModel):
         partner_name = related[0].factura.cliente.nombre
         receptor_regimen = related[0].factura.receptor_regimen
 
+        if not receptor_regimen:
+            msg = 'El receptor no tiene establecido su Regimen Fiscal'
+            data = {'ok': False, 'msg': msg}
+            return data
+
         emisor = Emisor.select()[0]
-        # ~ regimen_fiscal = related[0].factura.regimen_fiscal
         regimen_fiscal = emisor.regimenes[0].key
 
         filters = (