# Problems with (family) triggers

**URL:** <https://cylc.discourse.group/t/problems-with-family-triggers/1261>\
**Category:** Cylc Support\
**Created:** [November 12, 2025, 1:36pm UTC](https://cylc.discourse.group/t/problems-with-family-triggers/1261 "2025-11-12T13:36:43Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![gturek](https://avatars.discourse-cdn.com/v4/letter/g/a88e57/32.png) [@gturek](https://cylc.discourse.group/u/gturek)\
**Post date:** [November 12, 2025, 1:36pm UTC](https://cylc.discourse.group/t/problems-with-family-triggers/1261/1 "2025-11-12T13:36:43Z")

</div>

Kia ora! I am now trying to introduce dependency between “casts” in my workflow, but I am getting an error that I can’t get rid of. I am doing this in a simplified workflow, and here is the relevant bit of code :

```auto
{% set EXP_START_DATE = '20250317' %}
{% set EXP_END_DATE = '20250323' %}
{% from "recurrence" import recur_mon, recur_wed, recur_thu %}
{% set recur = {"hindcast": recur_mon(EXP_START_DATE), "nowcast": recur_wed(EXP_START_DATE), "forecast": recur_wed(EXP_START_DATE), "daily_forecast": "P1D"} %}
{% set RECUR_MON = recur_mon(EXP_START_DATE) %}
{% set RECUR_WED = recur_wed(EXP_START_DATE) %}
{% set RECUR_THU = recur_thu(EXP_START_DATE) %}
{% set EXP_START_DATE = '20250113' %}
{% set EXP_END_DATE = '20250127' %}
{% from "load_data" import load_json %}
{% set casts = load_json('casts.json') %}

[scheduler]
    cycle point format = %Y%m%d

{% for cast in casts %}
[task parameters]
    cycle_{{cast['exemode']}} = {{ cast["cycle"] | join(', ') }}
{% endfor %}

[scheduling]

    initial cycle point = {{ EXP_START_DATE }}
    final cycle point = {{ EXP_END_DATE }}

    [[graph]]

        R1 = """ clean """

{% for cast in casts %}
    {{ recur[cast['exemode']] }} = """
            clean[^] => {{cast['exemode']}}_init => {{cast['exemode']}}_block_DATA => {{cast['exemode']}}_block_NEMO<cycle_{{cast['exemode']}}=0> => {{cast['exemode']}}_com2newcom
    {% if cast['ig_modesystem'] == 0 %}
        {{cast['exemode']}}_block_NEMO<cycle_{{cast['exemode']}}=0> => {{cast['exemode']}}_ola2wola<cycle_{{cast['exemode']}}=0> & {{cast['exemode']}}_concat_bias_hts
        {{cast['exemode']}}_com2newcom => {{cast['exemode']}}_MROA
        {{cast['exemode']}}_ola2wola<cycle_{{cast['exemode']}}=0> & {{cast['exemode']}}_concat_bias_hts => {{cast['exemode']}}_create_lightout
        {{cast['exemode']}}_create_lightout => {{cast['exemode']}}_block_BIASTS
        {{cast['exemode']}}_block_NEMO<cycle_{{cast['exemode']}}=1> => {{cast['exemode']}}_ola2wola<cycle_{{cast['exemode']}}=1>
        {{cast['exemode']}}_MROA => {{cast['exemode']}}_cpmxpackcmz2cpmx => {{cast['exemode']}}_cpmx2cdf => {{cast['exemode']}}_cdf2cmx
        {{cast['exemode']}}_cdf2cmx => {{cast['exemode']}}_cmx2splitcmx => {{cast['exemode']}}_canredcmx2cmx_forsplit
        {{cast['exemode']}}_canredcmx2cmx_forsplit => {{cast['exemode']}}_cpmx2cdf_forsplit
        {{cast['exemode']}}_block_BIASTS & {{cast['exemode']}}_cdf2cmx => {{cast['exemode']}}_block_NEMO<cycle_{{cast['exemode']}}=1>
    {% endif %}
    """
{% endfor %}

        {{ RECUR_MON }} = hindcast[-P7D] => hindcast
        {{ RECUR_WED }} = """
              hindcast[-P1D] => nowcast
              nowcast[-P1D] => forecast
        """
        {{ RECUR_THU }} = nowcast[-P1D] => daily_forecast
        ! ({{ RECUR_THU }}) = daily_forecast[-P1D] => daily_forecast

[runtime]
    [[root]]
        [[[environment]]]
            TEST_DIR = /Users/gturek/dev/cylc_tests/${CYLC_WORKFLOW_ID}

    [[clean]]
        script = """
            rm -rf ${TEST_DIR}
        """

{% for cast in casts %}

    [[{{ cast['exemode'] }}_init ]]
        script = """
            mkdir -p ${TEST_DIR}/{{cast['exemode']}}/${CYLC_TASK_CYCLE_POINT}
            init_date_vars.sh ${CYLC_TASK_CYCLE_POINT} {{cast['exemode']}} {{cast['cycle_length']}}
        """
etc, etc

```

What is giving me problems is the bit:

```auto
        {{ RECUR_MON }} = hindcast[-P7D]:succeed_all => hindcast
        {{ RECUR_WED }} = """
              hindcast[-P1D] => nowcast
              nowcast => forecast
        ""
        {{ RECUR_THU }} = nowcast[-P1D] => daily_forecast
        ! ({{ RECUR_THU }}) = daily_forecast[-P1D] => daily_forecast

```

As is I get the validation error:  
`GraphParseError: Family trigger required: hindcast[-P1] => hindcast`  
which makes sence since hindcast, etc are a family.

But if I add “:succeed\_all” I get the error

`GraphParseError: Illegal family trigger: hindcast:succeed_all`

I am stuck…  
Thanx!  
Gaby

---

<div class="post-metadata">

**Author:** ![oliver.sanders](https://yyz2.discourse-cdn.com/free1/user_avatar/cylc.discourse.group/oliver.sanders/32/110_2.png) [@oliver.sanders](https://cylc.discourse.group/u/oliver.sanders)\
**Post date:** [November 12, 2025, 1:52pm UTC](https://cylc.discourse.group/t/problems-with-family-triggers/1261/2 "2025-11-12T13:52:02Z")

</div>

Hi,

Try `succeed-all` with a hyphen rather than an underscore.

---

<div class="post-metadata">

**Author:** ![gturek](https://avatars.discourse-cdn.com/v4/letter/g/a88e57/32.png) [@gturek](https://cylc.discourse.group/u/gturek)\
**Post date:** [November 12, 2025, 2:13pm UTC](https://cylc.discourse.group/t/problems-with-family-triggers/1261/3 "2025-11-12T14:13:15Z")

</div>

Wow, that is a serious case of PEBKAB. Cheers!

![headbang](https://global.discourse-cdn.com/free1/uploads/cylc1/original/1X/8f5e9571ac4fdb89d8c3bf835e25c2a9c52cd081.gif)

---

<div class="post-metadata">

**Author:** ![oliver.sanders](https://yyz2.discourse-cdn.com/free1/user_avatar/cylc.discourse.group/oliver.sanders/32/110_2.png) [@oliver.sanders](https://cylc.discourse.group/u/oliver.sanders)\
**Post date:** [November 12, 2025, 2:17pm UTC](https://cylc.discourse.group/t/problems-with-family-triggers/1261/4 "2025-11-12T14:17:02Z")

</div>

No probs, we could do with improving those error messages.