DES MOINES, Iowa (CNN) -- The Bernie Sanders campaign is challenging the results of the Iowa caucuses recount.

In a complaint sent to the Iowa Democratic Party and Democratic National Committee, the Sanders campaign claims the state party violated its own rules by allowing the Pete Buttigieg campaign to partake in the process because they didn't meet the proper requirements.

The complaint says the request was deficient because it didn't provide and explanation of how the national delegation could change. The IDP's recanvass and recount rules allow for a two-part process in which both parts compel a campaign to show evidence the national delegate numbers could change based on the outcome of the recanvass or recount.

Buttigieg held his lead over Sanders with the most state delegate equivalents after a recount of 23 precincts. Iowa allocated 14 and 12 of their national delegates to Buttigieg and Sanders, respectively.

Any campaign can make a challenge regarding an alleged delegate allocation violation to the rules committee for review and adjudication.

Results from the caucuses, including the recount, are set to be certified on Saturday.