I can't seem to make a custom field that allows multiple values work if more than one value is selected in Contact Form 7 via Form Processor. If one value is selected, everything works fine. If more than one value is selected, Form Processor fails and no contact is created.

This error is logged: Notice: Undefined index: title in Civi\FormProcessor\Type\OptionGroupType->getConfigurationSpecification() (line 40 of /var/www/html/sites/default/civicrm/extensions/form-processor/Civi/FormProcessor/Type/OptionGroupType.php).

Here is my contact form (it uses checkboxes). In Form Processor, I have a Custom Options input, with multiple selected and I have the same options set up there.

If I use Try out in Form Processor, it works fine, so I wonder if Form Processor is expecting the data in a different form than Contact Form 7 is sending it in.

  • Yes, it looks like Contact Form 7 is sending a list like "A, B, C" and the API wants an array like ["A","B","C"]
    – Lars SG
    Commented Jan 30, 2021 at 21:45
  • Issue on the plugin: wordpress.org/support/topic/…
    – Lars SG
    Commented Jan 30, 2021 at 21:53

1 Answer 1


Potentially you could also develop a new type of input in the Form Processor that deals with the comma separated list.

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