What is the real limit for Invoice lines created through a Map Reduce script? Netsuite says the "CSV" limit is 5,000 lines but a script we've had successfully creating invoices will fail above 4,000 lines but gives the error saying we are above 5,000

message: "Transactions may not contain more than 5000 lines.",

no clue... but is it maybe including shiplines and/or taxlines in its count?

Good considerations and makes sense. we don't have any shipping or tax in this one

There are almost certainly additional COGS lines as well. I'm not sure which line types actually count against the limit though.

Are you using kit items? it may be counting the sub items as lines as well.