Publish limit of createrawsendfrom

Question

While doing publish to a stream with createrawsendfrom the command returns

error code: -26
error message:
64: multi-op-return

if I have more than 31 publish items per the transaction,

for 31 transactions it works fine, but above that the error is thrown.

Can we increase this limit?

Answer 1

This is determined by the max-std-op-returns-count blockchain parameter. You can set this to up to 1024 if you are creating a new blockchain, or use the upgrade mechanism to change it on an existing one:

https://www.multichain.com/developers/upgrading-nodes-chains/

Please note that, to prevent abrupt changes in blockchain performance, each upgrade can no more than double this parameter from its previous value. So you might need to use a few upgrades in a row.