Whose fault is this (work related question)

I feel like the person that has to review should be the one that submits it even if they were off for a few days but I don’t really see the problem with it being submitted twice better then not be submitted at all . I would consider this a learning experience and a chance to set up a protocol for future with person a and b .

Neither... the system sucks.1. Have one person submitting it each time.2. Improve communication in situations where there will be absences from work.

You need an SPA (single point of accountability). It’s one persons responsibility with a backup person. Then it’s clear who does what, when, and who to go to if there is an issue.

The company for not having better tracking systems.

Both. They both needed to communicate better. Each should have ensure that the other was completed with his or her portion than determined who would submit the final work. Its easy to point fingers but its even easier for both to communicate their needs efficiently. But in a group project both are responsible for the work. Both colleagues would have been in trouble had nothing been turned in. Better that the company got two responses than none.Than again the company also needed to take in consideration the times off and set each colleague with appropriate colleague as in someone that would be present. But just my opinion.

Is it bad to submit it twice? It sounds like there needs to be better communication, especially with absences, but maybe there needs to be a hard, fast rule about who submits it.