The creator will try their best to make sure that every detail is correct. The better they are, the more details they will catch.
But a singular person can’t be relied upon to catch every detail. A conscious eye is required to check in places where details are most likely to be missed.
There are times when the manager in charge of making sure those details are there requires a wide set of skills related to the project. However, there is a huge amount of value in having only an attention to detail and an ability to communicate with the creator to make sure those details are implemented.