Our IBAN code is correct. Probably you are tryng to do a national transfer, you should do an abroad payment because our company and our bank reside in Spain.
Lots of times the internet banking doesn't permit abroad payments, in this case we reccommend you to contact with your branch and ask them how to do an abroad payment.
It can also happen that your internet banking doesn't recognise the BIC/SWIFT code "INGDESMM", so you have to add XXX at the end of the code: INGDESMMXXX.