Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Human-Machine Interface; Communication Breakdown
Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem
Human Factors
On Aircraft X we received an ENOTOC (Electronic NOTOC) from Load Control. While we reviewed the ENOTOC   I noticed that there was no UN HAZMAT number and pointed it out to Captain as something I believed was supposed to be on the ENOTOC. Having flown cargo at multiple previous jobs I am very familiar with the HAZMAT paperwork requirements. However; as the ENOTOC is fairly new and the printout is overly confusing to read and decipher Captain contacted Load Control to get further clarification on the matter and to insure that we were in compliance with the procedure and regulations. Load Control assured us that everything was in order and correct for the flight. I do not recall whether we sent to NOTOC acknowledgment before or after we contacted Load Control for clarification. Apparently my initial intuition that something wasn't right with the paperwork was correct and we should have requested new paperwork be sent. Even today I have no idea what HAZMAT was actually on our aircraft. I believe the primary cause of this error is the cumbersome layout of the ENOTOC format to begin with. Every time we receive an ENOTOC it's like trying to decipher a sudoku puzzle. The columns (location; weight; UN number) don't seem to align with what is being listed for the HAZMAT. Even figuring out the location of the HAZMAT requires finding a number on the form and then referring to the bottom of the form for the actual position (at least I think that's what we do because it's a form that is in such disorder that I'm not even sure if I'm looking at a position number or a weight). To compound this ENOTOC issue was the fact that when we inquired with Load Control they assured us that the paperwork was correct and everything was in compliance with procedure. Where the error occurred is unknown; but more awareness from everybody involved could have easily prevented this error.  I [suggest] a reevaluation of the ENOTOC procedure and paperwork is in order. The ACARS printout needs to be simpler and easier to read. If it can't; then we should return to the previous procedure with a hard copy of the NOTOC paperwork.
Air carrier First Officer reported issues with Electronic NOTOC information format.