Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 236.03; Flight Crew Total 12997.73; Flight Crew Type 3880.58
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance; Flight Crew Returned To Clearance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure
Briefed relief crew (shift change) that we received Oceanic CPDLC [Controller-pilot data link communication] to cross ZZZZZ at FL360. [ATC] would not let us climb to FL360 to comply with Oceanic. Sent message to Oceanic and they said no worries; that they would climb us after ZZZZZ. I left cockpit to go on break; upon returning from break; First Officers told me that they received a CPDLC message to climb to FL360 but called Oceanic to confirm and they said to maintain FL320. First Officers then contacted Oceanic because he was the one generating the CPDLC messages and he said to maintain FL320.
B-777 Captain reported clearance error between CPDLC Data Link Clearance and sector ATC clearance during Oceanic crossing.