TRON - Troubleshooting Tapos check error

Modified on Wed, 17 Jan 2024 at 11:50 AM

When utilizing the TRON blockchain, you may encounter the "tron.blockchain.broadcast.error" with the cause identified as "Tapos check error."

The Tapos error check specifically points to an issue with the "ref_block_hash" parameter in the transaction payload.

Example payload:

The transaction broadcast attempt may be done via the REST API endpoint: "/v3/tron/broadcast".

"{\"visible\":false,\"txID\":\"d29228b006181447a75796953824fff1de55be30a964ffdba2a88ff####\",\"raw_data\":{\"contract\":[{\"parameter\":{\"value\":{\"data\":\"a9059cbb0000000000000000000000009f4e3eb9ae86450bd2ec4be7c88004d215b47b0900000000000000000000000000000000000000000000000000000000####\",\"owner_address\":\"4113c83df83b14e8ff33f9aa63c48e41d####\",\"contract_address\":\"#####\"},\"type_url\":\"#####\"},\"type\":\"TriggerSmartContract\"}],\"ref_block_bytes\":\"85c5\",\"ref_block_hash\":\"d06bf1458a2f###\",\"expiration\":1705324902000,\"fee_limit\":40000000,\"timestamp\":1705324843822},\"raw_data_hex\":\"0a0285c52208d06bf1458a2f760040f0eca3e######48913\",\"signature\":[\"58c2f618e1e888bdbca29e7f4243ccdb19216bfbd32a4b6f363d5242dfd7ffdb912d3af8e7c64399dcb72dcb3aac7c83c6cfa6f####\"]}"

The reference block specified by the "ref_block_hash" parameter needs to be on the same chain as the transaction. If these are not aligned, the Tapos check error may occur.

Example error:

{
  "statusCode": 403,
  "errorCode": "tron.blockchain.broadcast.error",
  "message": "Unable to broadcast transaction",
  "cause": "Tapos check error."
}

Additional information is available at the following link.