Dynamic child pipelines and stop action not working - gitlab-ci

Question

after adding dynamic child pipelines to our CI pipeline on stop action(eg. deleting branch), stopped working.
In stop job we are deleting created k8s resources, so its important to be executed.
What i noticed is that defining environment in child pipeline is probable cause(without environment section, on stop action is working).
Any ideas?
gitlab-ci.yaml looks like this
stages:
....
- deploy
- tests_prepare
- maintenance_tests
....
deploy_branch_to_k8s:
stage: deploy
only:
- branches
except:
- master
dependencies:
- build_api
environment:
name: branches/$CI_COMMIT_REF_NAME
on_stop: stop_deployed_branch_in_k8s
script:
- deploy to k8s
stop_deployed_branch_in_k8s:
stage: deploy
only:
- branches
except:
- master
when: manual
dependencies: []
variables:
GIT_STRATEGY: none
environment:
name: branches/$CI_COMMIT_REF_NAME
action: stop
script:
- delete k8s resources
generate_config_tests:
stage: tests_prepare
only:
- branches
except:
- master
dependencies:
- build_api
....
script:
- python3 ./utils/generate-jobs-config.py > generated-config.yml
artifacts:
paths:
- generated-config.yml
create_maintenance_tests_pipeline:
stage: maintenance_tests
only:
- branches
except:
- master
trigger:
strategy: depend
include:
- artifact: generated-config.yml
job: generate_config_tests
variables:
PARENT_PIPELINE_ID: $CI_PIPELINE_ID
generated-config.yml looks something like this
stages:
- tests
run_maintenance_test_job___TEST_NAME__:
stage: tests
retry: 2
environment:
name: branches/$CI_COMMIT_REF_NAME
needs:
- pipeline: $PARENT_PIPELINE_ID
job: generate_config_maintenance_tests
script:
- deploy a run tests in k8s

Answer 1

If I'm not wrong, you should skip the needs part altogether in the child pipeline, since it is only used for jobs in the same pipeline. Its upstream will be the parent pipeline anyway.