The phrase "to accompany the submission" means to include or provide additional documents or materials that go along with something that is being sent or presented.
Sentences with «to accompany the submission»
(We also offer detailed guidelines for preparing figures accompanying submission of a revised manuscript after peer review.) (sciencemag.org)
The appropriate forms from OFA must accompany the submission of all test results to OFA. (toller.ca)
However, a list of the ingredients and the method of manufacturing on the producer's official letterhead is still required to accompany the submission. (beveragetradenetwork.com)