The weight for this shipment is not allowed

Hi!

Our customer occassionally experiences an issue with generating shipping labels for large (heavy) orders:

(
? ? [Errors] => Array
? ? ? ? (
? ? ? ? ? ? [0] => Array
? ? ? ? ? ? ? ? (
? ? ? ? ? ? ? ? ? ? [Error] => Validation failed for shipment: [shipment-code]
? ? ? ? ? ? ? ? ? ? [Code] => 14201
? ? ? ? ? ? ? ? ? ? [Description] => The weight 34850?for shipment [shipment-code]?is not allowed
? ? ? ? ? ? ? ? )
? ? ? ? )
)

I’m not sure how to proceed with this. Obviously it is requested to allow such large orders, but I don’t see a way to increase the max shipping weight, or to create multiple shipments. (The order consists of many products so it’s technically probably possible to split it into multiple shipments.)

Do you have any advice on how to proceed? Should our customer get a different PostNL account or subscription to be able to handle larger orders?