TxBuilder Allows addition of more collateral inputs than protocol parameters allow

[while0x1]

TxBuilder can result in a failed transaction due to building a transaction with more collateral inputs than the protocol parameters allow. This may only occur through manual collaterals being appended to the builder.

05-Feb-25 15:15:06 - ERROR - Ogmios responded with error: {'jsonrpc': '2.0', 'method': 'submitTransaction', 'error': {'code': 3131, 'message': "The transaction contains too many collateral inputs. The maximum number of collateral inputs is constrained by a protocol parameter. The field 'data.maximumCollateralInputs' contains the current value of that parameter, and 'data.countedCollateralInputs' indicates how many inputs were actually found in your transaction.", 'data': {'maximumCollateralInputs': 3, 'countedCollateralInputs': 4}}, 'id': None}

Context could perhaps use maximumCollateralInputs parameter to limit the utxos added to the transaction, and or try to use the supplied collateral set to get above the standard 5000000 lovelaces by finding a combination of utxos exceeding 5ADA while being less than maximumCollateralInputs.

[cffls]

This is fixed in #411. Users can now set collateral_return_threshold to 5000000 in order to prevent the txbuilder from calculating a collateral return.