VF-1186
Si EmitidaPorTercerosODestinatario es igual a T el bloque Tercero será de cumplimentación obligatoria.
In English EmitidaPorTerceroODestinatario is T (issued by a third party), so the Tercero block is required.
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
[1186] Si EmitidaPorTercerosODestinatario es igual a T el bloque Tercero será de cumplimentación obligatoria.
/*:RegFactuSistemaFacturacion/*:RegistroFactura/*:RegistroAlta
not($by = 'T') or *:Tercero
Checked with VERI*FACTU invoice records