Thrown when a Bigtable transaction is asked to write a second row.
Bigtable's only atomicity unit is the single row: a multi-row batch is
atomic per entry and not as a whole. A handle that accepted several row keys
would therefore promise an atomicity the platform does not offer, so the
refusal happens at the write that crosses the bound rather than at commit,
naming both rows — the CosmosTransactionScopeError precedent.
readonly
name: string
Discriminant for consumers that cannot use instanceof across realms.