No filter means "has no associated record": `NUM_ASSOCIATIONS` isn't a known filter type, and an `ASSOCIATION` branch with `NOT_IN_LIST` still needs an associated record. "The associated record's field is empty" is `IN_LIST` with an inner `IS_UNKNOWN` filter.

Measured

Checked

Area

Filters

Tags

filters, no associated record, without associations, empty association, not-in-list, is-unknown

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No filter means "has no associated record": NUM_ASSOCIATIONS isn't a known filter type, and an ASSOCIATION branch with NOT_IN_LIST still needs an associated record. "The associated record's field is empty" is IN_LIST with an inner IS_UNKNOWN filter.