What is the primary purpose of PS FORM 3883?

The primary purpose of PS FORM 3883 is to record firm deliveries. This form is specifically designed for postal workers to document the delivery of packages and ensure accountability for items that are delivered to businesses and organizations. Using this form helps maintain a detailed record of items that have been received, which is crucial for both the postal service and the recipient. This tracking system not only aids in verifying that correct deliveries were made but also helps in resolving any potential disputes regarding whether or not certain packages were received.

The other options, though relevant to postal operations in different contexts, do not align with the specific intent of PS FORM 3883. Tracking packages in transit generally involves different forms and processes focused on the movement of mail rather than the delivery confirmation. Similarly, managing standing delivery orders pertains to regular delivery schedules rather than documenting individual firm deliveries. Lastly, while documenting mail distribution is a broader task, it does not capture the specific nature of the deliveries that PS FORM 3883 is meant to address. Thus, the form's role in managing and recording firm deliveries is crucial to efficient postal operations.