Final answer:
A signature or initials on a document for approval primarily aim to ensure input accuracy by verifying that entered information is correct.
Step-by-step explanation:
The written approval in the form of a signature or initials on a document, indicating that a person has authorized the event, is directed primarily at achieving the control goal of ensure input accuracy.
This act verifies that the information entered into a system or document is correct as per the knowledge of the person approving it. It is a critical component of data quality and is similar to how scriveners would verify the accuracy of their copy by reading from the original and checking word for word.
The approval signifies a factual representation, rather than a document that might be written to persuade or may contain falsifications.
The authoritative signature ensures that information is as accurate as possible at the time of data capture, an essential step to prevent errors and irregularities in data processing and subsequent analysis.