We have calculated the weight of the requests toward the Offer, Order, Contracts and Invoice resources and decided to set a limit of 2000 rows.
Please note that this only affects the rows containing article number, price etc.
In the Invoice resource for example these are the InvoiceRows that are limited.
This limit is required to maintain stability.
Please note that even with this limitation, viewing an invoice with an excessive amount of rows will most likely result in slow performance for the end users in Fortnox.