We have an incorrect tax procedure. For reverse charge tax codes you usually post tax in and out at the same time, e.g. ESA and ESE both the same amount.
Incorrectly ESE is 100% based on ESA. Usually ESE should be based on BASB with the same percentage as ESA. Spain VAT ledger reporting SII rejects the incorrect setting.
Can the tax procedure and tax code be simply changed to reflect this - or is it better to create a new tax code?