Pacejet and multicurrency accounting

I have a client using Pacejet that handles their shipping. They are running into an error with  Pacejet because the DHL API is pushing a foreign currency into their system. DHL does not have a currency converter on their end so they are telling our client to set up the Currency Type in Acumatica.  Our client is not currently using Multicurrency Accounting.  I am wondering if anyone has had to set this up for their clients for Pacejet only and if so what it entailed and if they ran into any issues with it.