how do i verify that an outbound integretion has finished to start another

Certified Associate Developer

i'm working on a integration  with quickbooks online and i'm working on a process that requieres me to   work on some objects. one after another and sometimes it does work but some other it doesn't and throw me this error

" You and vladimir were working on this at the same time. vladimir finished before you did, so your work was not saved."

is there a way to make to sure that that process was completed before starting another ?

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