When you pay a new supplier with a Pleo card, a new contact can be automatically created in Holded as soon as the card expense is exported. Here's how to set this up:
In Holded, configure the default supplier account that will be used to create new supplier accounts. If most of your suppliers are creditors and you plan to pay them in euros, then it's advisable to select 4100 Payables for services (euro) as the default. Each new creditor will then be called 4100000+1, 4100000+2, etc. You can always edit specific suppliers in the contacts page.
In Pleo, include a CIF or NIF (tax number) on any relevant expenses. This can be added by an admin or bookkeeper when editing an expense on the Export page. Scroll down to the CIF/NIF field:
Export the expense to Holded.