Good morning,
We are having a problem with the Redsys payment gateway when implementing it in the store.
Whenever we try to make a payment, we get an error from Redsys (SIS0434).
We have contacted the Redsys support team and they have informed us that the problem is that the value “DS_MERCHANT_ORDER” they receive is only one character long, when it should be between 4 and 12 characters.
The Redsys data we have entered is correct, so we don't know how to fix it. We need to get the store up and running urgently.
I have seen that we probably have the same problem that they had here: https://www.joomshaper.com/forum/question/36708?order=newest
Thank you so much