@solana/kit · Keys and signatures
Solana error #3704003
KEYS__SIGNATURE_STRING_LENGTH_OUT_OF_RANGE
Appears as Solana error #3704003; Decode this error by running `npx @solana/errors decode -- 3704003 '…'`
Message
Expected base58-encoded signature string of length in the range [64, 88]. Actual length: $actualLength.
Placeholders (actualLength) are filled from the error’s context. Paste the base64 argument below to see the real values.
What it means
Key pair construction, signature byte lengths and key extractability.
What to do
- Secret keys are 32 bytes (seed) or 64 bytes (seed + public key); signatures are 64 bytes.
- Keys created with
extractable: false cannot be exported later.
Decode it locally instead
npx @solana/errors decode -- 3704003 '<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__KEYS__SIGNATURE_STRING_LENGTH_OUT_OF_RANGE) lets you branch on it.