# Buggy code
def main():
    argument_spec = dict(
        name=dict(required=True),
        description=dict(required=False),
        kind=dict(required=False, choices=KIND_CHOICES.keys()),
        inputs=dict(type="dict", required=False),
        injectors=dict(type="dict", required=False),
        state=dict(choices=["present", "absent"], default="present"),
    )

    module = TowerModule(argument_spec=argument_spec, supports_check_mode=False)

    name = module.params.get("name")
    kind = module.params.get("kind")
    state = module.params.get("state")

    json_output = {"credential_type": name, "state": state}

    tower_auth = tower_auth_config(module)
    with settings.runtime_values(**tower_auth):
        tower_check_mode(module)
        credential_type_res = tower_cli.get_resource("credential_type")

        params = {}
        params["name"] = name
        params["kind"] = kind
        params["managed_by_tower"] = False

        if module.params.get("description"):
            params["description"] = module.params.get("description")

        if module.params.get("inputs"):
            params["inputs"] = module.params.get("inputs")

        if module.params.get("injectors"):
            params["injectors"] = module.params.get("injectors")

        try:
            if state == "present":
                params["create_on_missing"] = True
                result = credential_type_res.modify(**params)
                json_output["id"] = result["id"]
            elif state == "absent":
                params["fail_on_missing"] = False
                result = credential_type_res.delete(**params)

        except (exc.ConnectionError, exc.BadRequest) as excinfo:
            module.fail_json(
                msg="Failed to update credential type: {0}".format(excinfo),
                changed=False,
            )

    json_output["changed"] = result["changed"]
    module.exit_json(**json_output)


# Traceback (tower_cli.exceptions.AuthError)
TASK [Set AWX admin account] *******************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: tower_cli.exceptions.AuthError: Invalid Tower authentication credentials (HTTP 401).
fatal: [awx1]: FAILED! => changed=false
module_stderr: |-
Traceback (most recent call last):
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 113, in <module>
_ansiballz_main()
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 105, in _ansiballz_main
invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)
File "/home/d069683/.ansible/tmp/ansible-tmp-1546595798.81-18639309082017/AnsiballZ_tower_user.py", line 48, in invoke_module
imp.load_module('__main__', mod, module, MOD_DESC)
File "/tmp/ansible_tower_user_payload_uMnpMh/__main__.py", line 131, in <module>
File "/tmp/ansible_tower_user_payload_uMnpMh/__main__.py", line 118, in main
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 698, in modify
return self.write(pk, create_on_missing=create_on_missing, force_on_exists=True, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 361, in write
**kwargs
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 223, in _lookup
existing_data = self.get(include_debug_header=include_debug_header, **read_params)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 486, in get
response = self.read(pk=pk, fail_on_no_results=True, fail_on_multiple_results=True, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/models/base.py", line 288, in read
r = client.get(url, params=kwargs)
File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 521, in get
return self.request('GET', url, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/tower_cli/api.py", line 255, in request
raise exc.AuthError('Invalid Tower authentication credentials (HTTP 401).')
tower_cli.exceptions.AuthError: Invalid Tower authentication credentials (HTTP 401).
module_stdout: ''
msg: |-
MODULE FAILURE
See stdout/stderr for the exact error
rc: 1

# Fixed code
def main():
    argument_spec = dict(
        name=dict(required=True),
        description=dict(required=False),
        kind=dict(required=False, choices=KIND_CHOICES.keys()),
        inputs=dict(type="dict", required=False),
        injectors=dict(type="dict", required=False),
        state=dict(choices=["present", "absent"], default="present"),
    )

    module = TowerModule(argument_spec=argument_spec, supports_check_mode=False)

    name = module.params.get("name")
    kind = module.params.get("kind")
    state = module.params.get("state")

    json_output = {"credential_type": name, "state": state}

    tower_auth = tower_auth_config(module)
    with settings.runtime_values(**tower_auth):
        tower_check_mode(module)
        credential_type_res = tower_cli.get_resource("credential_type")

        params = {}
        params["name"] = name
        params["kind"] = kind
        params["managed_by_tower"] = False

        if module.params.get("description"):
            params["description"] = module.params.get("description")

        if module.params.get("inputs"):
            params["inputs"] = module.params.get("inputs")

        if module.params.get("injectors"):
            params["injectors"] = module.params.get("injectors")

        try:
            if state == "present":
                params["create_on_missing"] = True
                result = credential_type_res.modify(**params)
                json_output["id"] = result["id"]
            elif state == "absent":
                params["fail_on_missing"] = False
                result = credential_type_res.delete(**params)

        except (exc.ConnectionError, exc.BadRequest, exc.AuthError) as excinfo:
            module.fail_json(
                msg="Failed to update credential type: {0}".format(excinfo),
                changed=False,
            )

    json_output["changed"] = result["changed"]
    module.exit_json(**json_output)