Error: Transaction too large for fee policy

Question

Hi! related to the answer from that other topic.

I'm getting for every tx the message "Error: Transaction too large for fee policy" in the log.

I saw that I get over a 100 inputs and maybe this is the problem. How can i solve this?

These are my chain params:

{"method":"getblockchainparams","params":[],"id":1,"chain_name":"testchain14"}

{
    "chain-protocol" : "testchain",
    "chain-description" : "test",
    "root-stream-name" : "root",
    "root-stream-open" : true,
    "chain-is-testnet" : false,
    "target-block-time" : 15,
    "maximum-block-size" : 8388608,
    "default-network-port" : 15444,
    "default-rpc-port" : 15445,
    "anyone-can-connect" : true,
    "anyone-can-send" : true,
    "anyone-can-receive" : true,
    "anyone-can-receive-empty" : true,
    "anyone-can-create" : false,
    "anyone-can-issue" : false,
    "anyone-can-mine" : true,
    "anyone-can-activate" : false,
    "anyone-can-admin" : false,
    "support-miner-precheck" : true,
    "allow-p2sh-outputs" : true,
    "allow-multisig-outputs" : true,
    "setup-first-blocks" : 60,
    "mining-diversity" : 0.30000000,
    "admin-consensus-upgrade" : 0.50000000,
    "admin-consensus-admin" : 0.50000000,
    "admin-consensus-activate" : 0.50000000,
    "admin-consensus-mine" : 0.50000000,
    "admin-consensus-create" : 0.00000000,
    "admin-consensus-issue" : 0.00000000,
    "lock-admin-mine-rounds" : 10,
    "mining-requires-peers" : true,
    "mine-empty-rounds" : -1.00000000,
    "mining-turnover" : 0.50000000,
    "first-block-reward" : 50000000000000000,
    "initial-block-reward" : 10000000,
    "reward-halving-interval" : 21560000,
    "reward-spendable-delay" : 1,
    "minimum-per-output" : -1,
    "maximum-per-output" : 50000000100000000,
    "minimum-relay-fee" : 3000000,
    "native-currency-multiple" : 100000000,
    "skip-pow-check" : false,
    "pow-minimum-bits" : 8,
    "target-adjust-freq" : -1,
    "allow-min-difficulty-blocks" : false,
    "only-accept-std-txs" : true,
    "max-std-tx-size" : 4194304,
    "max-std-op-returns-count" : 10,
    "max-std-op-return-size" : 2097152,
    "max-std-op-drops-count" : 5,
    "max-std-element-size" : 8192,
    "chain-name" : "testchain14",
    "protocol-version" : 10008,
    "network-message-start" : "fff1f4f9",
    "address-pubkeyhash-version" : "00053272",
    "address-scripthash-version" : "0599a488",
    "private-key-version" : "8030df3e",
    "address-checksum-value" : "15b743a3",
    "genesis-pubkey" : "0245f4ebd51b8450bf5ce01a6d03570ebe422d8cdebe1c332ade5fd5
6e708f28d2",
    "genesis-version" : 1,
    "genesis-timestamp" : 1502828625,
    "genesis-nbits" : 536936447,
    "genesis-nonce" : 416,
    "genesis-pubkey-hash" : "e573ecbb4ff29bc81706a89e2e3d5a250df92cfe",
    "genesis-hash" : "00f86b5a5b0ca2479c2c0d51f000e1c4d1bd460af74f63272e5aee31bc
49c6bf",
    "chain-params-hash" : "c2f5be45a0f61f015f5416098488924c4b581bc449772e77a69d9
f93791596db"
}

Answer 1

I believe this is about the fee attached to the transaction. The minimum-relay-fee is slightly misleadingly named – it is actually the minimum fee per kilobyte in the transaction. So your transactions are presumably larger than 1kb, and need a higher fee than you thought.

Comments

My average size for tx is 0.2kB. How does this relate with the error "Transaction too large for fee policy" in the log?

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The threshold is applied on a per-transaction basis, not on some kind on average. So even if your average transaction is 0.2kb in size, the ones with 100 inputs are far larger than that.