CM4SF_AUTO_SUB_QUERY
What this means: An automatic Subscriber Rule query failed while evaluating add/delete criteria.
Common causes: Invalid criteria value for field type; missing field access; malformed rule configuration.
What to do: Open the Subscriber Rule and confirm criteria values match the field type (e.g. checkbox = true/false, not picklist text). Read the Maintenance message for the rule Id. Guide: Subscriber Rules.
To see all maintenance codes please click here.

