A321
Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Undershoot
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification
Airspace Structure; Procedure
We were assigned the DOTSS 1 RNAV Departure. We departed 25L; somewhere between DOCKER and WEILER we were given Direct PEVEE. We were also given 280 Knots when able. The controller gave us a couple of headings; and we eventually rejoined the departure. Before he handed us off; he told us to expect HOMER at FL240. On reviewing the MCDU we realized we were not going to make the restriction. We informed him; at that point he gave us a number to call. I believe by not staying on the departure it caused us not to be able to make the restriction; also we were heavy. By staying on the SID should have rectified the problem.
[Report narrative contained no additional information.]
A321 flight crew reported that they were unable to make the crossing restriction due to the shortened SID and having to fly vectors with speed controls.