FLX-3201: row carries a column the expose does not declare

Family: seam/conformance (the 3000 band)

The seam is closed-world (KERNEL-SPEC §9): a row may carry only the columns the referenced FLUID contract declares, because the emitted array is positional and an undeclared value has no position. Add the column to the contract, or stop producing it.

Look it up offline

$ fluxsim explain FLX-3201

Every code is listed in the error index.