Grounding parsers must cover spoken magnitude forms

When an LLM normalizes a spoken numeric identifier but a deterministic caller-grounding guard rejects it, check whether the guard supports magnitude words such as hundred and thousand. A parser designed for digit sequences can reject a correct cardinal-number normalization even with clean text; changing the model or interruption setting does not establish a parser fix. Compare the submitted argument with the guard result using isolated magnitude-word probes before choosing remediation. Preserve rejection for genuinely unsupported or ambiguous input; a bounded reproduction identifies a grammar mismatch, not a safe general normalization policy or a reason to bypass grounding.

Applies when: A speech-derived identifier is normalized by a model and independently grounded against caller text. Keywords: LLM spoken identifier numeric grounding parser magnitude hundred thousand rejection