We would like to have the invoice in another language, then German when people order from Spain, but when we put the country ID like (8) in billingCustomerLanguage field in shema database, nothing is updating in Plentymarkets, the language setting is still in German.
Do you know where the problem can be?
Thanks for your help.
the billingCustomerLanguage must be set with the language code (see https://developers.plentymarkets.com/rest-doc/gettingstarted#languages ), e.g. "es" for spanish.