# r3-b1-25

**Claim (as registered):** The genuinely-blank-field failure mode (both the language and script portal fields are blank or a null-token for a record) never accounts for 15% or more of a complete state's records.

**Proposed mechanism:** The straightforward source-data-completeness ceiling counterpart to the curation-gap ceiling described above, covering records where the underlying catalogue entry itself simply lacks language/script information.

**Scope:** Source: NAMAMI (India), a state-facetted manuscript-holdings portal (holdings, not origin -- every record is held-by, not produced-by, the state). Training: 11 states with a complete portal walk (~4.22M records: Bihar, Himachal Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Odisha, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal). Holdout: 9 more states/union territories walked to completion after this claim was fixed (Jammu & Kashmir, Assam, Haryana, Delhi, Manipur, Puducherry, Punjab, Uttarakhand, Jharkhand), each landed as a complete, reconciled count before testing. All data comes from one portal, so survival across states shows stability within this portal's own cataloguing practice, not independently of it.

**Training-side evidence:** This failure mode's share ranges up to 11.80% (the training maximum) in one state; two more states sit above 10%, most others are under 3.6%.

**Holdout test and outcome:** Tested across all nine India holdout states/UTs; every state's share stayed under the 15% ceiling.

**Status:** Survived every tested holdout state.
