🔧 Improved: House numbers are now optional for all Spanish carriers 🇪🇸

Adding a house number in the customer's address is not mandatory anymore
 when shipping to Spain. 🎉
Why?
Some Spanish addresses don’t have a house number available, so merchants had to give us a non-existent or faulty address in that case. This left them with a lot of manual and tedious work. 
Next to that, this aligns more with carrier requirements, since they also don’t require a house number to be present if there is none.