Final answer:
Matching customer account numbers and inventory item numbers to the numbers in the customer and inventory master files is an example of a field check.
Step-by-step explanation:
Matching customer account numbers and inventory item numbers to the numbers in the customer and inventory master files is an example of a field check. A field check involves verifying that the data entered in a specific field meets certain conditions or requirements. In this case, the field check ensures that the account numbers and item numbers are accurately entered and associated with the correct master files.