As per the following page records that have localizable attributes such as Products can not be updated when using a display language that is not the base language of the organization.

https://docs.microsoft.com/en-us/dynamics365/customerengagement/on-premises/developer/localize-product-property-values#create-or-update-records-with-localizable-attributes

Please consider lifting this restriction so that records with localizable attributes can be created/updated with any display language.