SPF with Mail and inventory.

SPF with Mail and inventory.

Hi I have been using Zoho inventory and books and now want to add mail but when I do the SPF authentification I get a multiple record failure.

It wants me to add:
v=spf1 include:zoho.eu ~all

But I already have a record which is:
v=spf1 include:eu-sender.zoho-inventory.com

How do i get it to work with both services please?