B737-700
Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 369
Communication Breakdown; Distraction; Workload; Time Pressure; Situational Awareness
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Became Reoriented; Flight Crew Requested ATC Assistance / Clarification
Human Factors
On the ground in ZZZ we had a planned cruise altitude of FL 240; on the ZZZZZ [arrival] into ZZZ1. When we received our Weight and Balance calculation it was incomplete due to our cruise altitude of 240; and a crossing restriction on the [arrival] at ZZZZZ1 at or above FL 290. I; [the] FO (First Officer) went back into the flight plan to correct ZZZZZ1 to match our cruise altitude of 240 so we could complete the weight and balance/performance. Once we reached our cruise altitude of 240; we encountered turbulence; so we requested a higher altitude of FL 300. I FO forgot about what I changed in the box when I was on the ground in ZZZ. We received a clearance to descend via the [arrival]. We as a Crew had not yet briefed or reviewed the arrival. What didn't help was encountering a pocket of moderate turbulence; and before I knew it; the PF was trying to capture 240. We realized our mistake and asked ZZZ1 Center for lower. ZZZ1 Center never gave us a lower altitude; except he argued with me about my turbulence report.
B737 First Officer reported an altitude deviation due to a waypoint altitude setting in the FMS that was never changed.