In BombBomb, you can create Custom Fields for your contacts to store different kinds of information with your contacts. Using the form system you can create fields on a form that feed data into the Contact Custom Fields.
In some rare cases, it's possible to have removed the Contact Custom Field from your account as a whole, and still have a Form Field attached to the now-deleted Contact Custom Field. When this happens, the field on the form still no longer saves data that's submitted to the form.
To fix this, you need to remove the field from the form, and re-create it.
Important Note: Forms are only available to legacy and Prompt users of BombBomb.