Submitted to too many Perforce Jobs

I'm trying to submit to perforce but I'm getting the error message:

Submit validation failed -- fix problems then use 'p4 submit -c 755024'. 'Max number of jobs' validation failed: You have attached more than 20 jobs to this >changelist. If you would like to attach that many jobs please contact perforcehelp. Otherwise please bring the number of attached jobs to 20 or below and resubmit.

Normally when I submit, I get a text file that I can edit to lower the number of jobs I can submit to.开发者_开发问答 This is no longer popping up. How do I change which jobs I'm submitting to?