Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Communication Breakdown; Confusion; Distraction
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Flight Crew Returned To Clearance
Human Factors; Procedure
Amendment to the routing was missed by the flight crew on PDC. One fix was removed from the routing. ATC queried us during our turn from ZZZZZ to ZZZ. Prior to that we were unaware of the deviation. ATC's stated that we were 30 deg off course. I figured it was a data entry problem as our HSI showed us directly on course. After reviewing the PDC we realized that we forgot to delete a fix that was originally on the filed flight plan but not in the cleared clearance. Air Traffic Control also made a unwarranted sarcastic comment 'You are always right sir' when we queried to see if they still showed us off course when we provided the explanation that we were currently in a turn towards ZZZ.Complacency and lack of recent flying experience This was my first leg in nearly 2 months. We read the clearance and completely missed the removal of one fix ZZZZZ from routing.We asked Air Traffic Control where they thought we should have been; by the time that ATC found the error we were already in the turn towards a fix on the flight plan no further correction as needed.I will be more alert when transcribing PDC clearances particularly with reroutes. I believe that PDC could be less ambiguously formatted. Even though the captain did review my programming I believe it would be wise to reference the actual PDC clearance instead of the first officers transcription of the PDC clearance. When referencing the transcription of the PDC Clearance it adds more layers of possible errors in transcription and data entry.
Air carrier First Officer reported experiencing a track heading deviation after missing an intersection on the routing received from the PDC.