What is the issue?

If you are calculating the VAT of an invoice and it doesn't correspond to the VAT on the platform, it's just because Holded applies the line method as rounding system. Using two different rounding systems, it can happen to see a few cents discrepancies.

How to solve it

The Spanish Royal Decree 1619/2012, of November 30th, article 6, section f, about the regulation on invoicing requirements, states that both the line method and the global method are equally valid for VAT calculation, and it doesn't establish a preferred method.