Trying to lunch a job workflow via REST API and passing extra variables for the playbook to consume, but returned body shows that provided variables are put in ignored_fields section.
Used POSTMAN and CURL to run the templates both returned the same result
CURL command
curl -X POST http://172.16.0.97/api/v2/job_templates/8/launch/ -H "Content-Type: application/json" -H "Authorization: Bearer Je
gxwfQrdKQXoRUtNWtWFz62FX5bTy" -d "{\"extra_vars\": {\"vendor\":\"juniper\"}}"
Returned body
{"job":34,"ignored_fields":{"extra_vars":{"vendor":"juniper"}},"id":34,"type":"job","url":"/api/v2/jobs/34/","related":{"created_by":"/api/v2/users/1/","modified_by":"/api/v2/users/1/","labels":"/api/v2/jobs/34/labels/","inventory":"/api/v2/inventories/1/","project":"/api/v2/projects/7/","extra_credentials":"/api/v2/jobs/34/extra_credentials/","credentials":"/api/v2/jobs/34/credentials/","unified_job_template":"/api/v2/job_templates/8/","stdout":"/api/v2/jobs/34/stdout/","job_events":"/api/v2/jobs/34/job_events/","job_host_summaries":"/api/v2/jobs/34/job_host_summaries/","activity_stream":"/api/v2/jobs/34/activity_stream/","notifications":"/api/v2/jobs/34/notifications/","job_template":"/api/v2/job_templates/8/","cancel":"/api/v2/jobs/34/cancel/","create_schedule":"/api/v2/jobs/34/create_schedule/","relaunch":"/api/v2/jobs/34/relaunch/"},"summary_fields":{"inventory":{"id":1,"name":"Demo Inventory","description":"","has_active_failures":true,"total_hosts":1,"hosts_with_active_failures":1,"total_groups":0,"groups_with_active_failures":0,"has_inventory_sources":false,"total_inventory_sources":0,"inventory_sources_with_failures":0,"organization_id":1,"kind":""},"project":{"id":7,"name":"Cox-Phase3","description":"","status":"successful","scm_type":"git"},"job_template":{"id":8,"name":"Port Flap","description":""},"unified_job_template":{"id":8,"name":"Port Flap","description":"","unified_job_type":"job"},"created_by":{"id":1,"username":"admin","first_name":"","last_name":""},"modified_by":{"id":1,"username":"admin","first_name":"","last_name":""},"user_capabilities":{"delete":true,"start":true},"labels":{"count":0,"results":[]},"extra_credentials":[],"credentials":[]},"created":"2019-05-14T09:43:16.115516Z","modified":"2019-05-14T09:43:16.177517Z","name":"Port Flap","description":"","job_type":"run","inventory":1,"project":7,"playbook":"main.yml","forks":0,"limit":"","verbosity":1,"extra_vars":"{}","job_tags":"","force_handlers":false,"skip_tags":"","start_at_task":"","timeout":0,"use_fact_cache":false,"unified_job_template":8,"launch_type":"manual","status":"pending","failed":false,"started":null,"finished":null,"elapsed":0.0,"job_args":"","job_cwd":"","job_env":{},"job_explanation":"","execution_node":"","controller_node":"","result_traceback":"","event_processing_finished":false,"job_template":8,"passwords_needed_to_start":[],"ask_diff_mode_on_launch":false,"ask_variables_on_launch":false,"ask_limit_on_launch":false,"ask_tags_on_launch":false,"ask_skip_tags_on_launch":false,"ask_job_type_on_launch":false,"ask_verbosity_on_launch":false,"ask_inventory_on_launch":false,"ask_credential_on_launch":false,"allow_simultaneous":false,"artifacts":{},"scm_revision":"","instance_group":null,"diff_mode":false,"job_slice_number":0,"job_slice_count":1,"credential":null,"vault_credential":null}
According to the fine manual, AWX (and thus Tower) version 3.0 and greater has made extra_vars more strict: https://docs.ansible.com/ansible-tower/latest/html/userguide/job_templates.html#ug-jobtemplates-extravars
If you are running a version greater than 3.0, you will need to either turn on playbook survey or set ask_variables_on_launch=True for that template