OFFCHAIN_MESSAGE__SIGNATORIES_MUST_BE_UNIQUE
Appears as Solana error #5607016; Decode this error by running `npx @solana/errors decode -- 5607016 '…'`
An address must be listed no more than once among the signatories of an offchain message
Encoding and validating off-chain signed messages (application domain, format, length limits).
npx @solana/errors decode -- 5607016 '<base64 context>'In development, import from @solana/kit as usual and the full message is thrown. In production the message is stripped to keep bundles small; the error object still carries error.context with the same values this page decodes, and isSolanaError(err, SOLANA_ERROR__OFFCHAIN_MESSAGE__SIGNATORIES_MUST_BE_UNIQUE) lets you branch on it.