Hundreds of extracts are ordered each week, ranging from relatively simple label orders to complicated database applications, frequently needed in short time frames.
Errors certainly can occur.
It is not enough to forward material from the Computer Department to the Shipping Department. Although these departments detect certain types of errors, all output goes to the Quality Control Department before going to Shipping where it is packaged and sent out via freight of the customer's choice. The Quality Control Department consists of highly trained personnel whose sole purpose is to insure accuracy. They check for codelines, counts, type of stock, accuracy of splits, sequence, print quality, etc. They make sure all transactions were processed and that circulation balances from issue to issue by factoring in adds, kills, mass drops, and expires.