Assign location to pricelist through API

Does someone know how to add a pricelist to a company through API?
Currently there is only mutation priceListUpdate available but this requires to provide all currently assigned Company locationIds for this pricelist. In theory no issue, but there is a query limit of 250 company IDs, so I am not able to assign more than 250 to the pricelist though API.
Shopify Backend uses mutation AssignLocationPriceLists but this is not yet available in the API to assign a single compnay to the pricelist.Adding companies to the pricelist by hand is unfortunately not an option at all. (edited)

Have you found anything additional out? We are running into the same issue, and there doesn’t seem to be any recorded response as to how to use the API to link a price list to a company/location.