# Mock transaction the gasUsed is less than zero?

**URL:** <https://forums.sui.io/t/mock-transaction-the-gasused-is-less-than-zero/43389>\
**Category:** Technical Support\
**Tags:** sui\
**Created:** [April 27, 2023, 7:10am UTC](https://forums.sui.io/t/mock-transaction-the-gasused-is-less-than-zero/43389 "2023-04-27T07:10:10Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Abel](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@Abel](https://forums.sui.io/u/Abel)\
**Post date:** [April 27, 2023, 7:10am UTC](https://forums.sui.io/t/mock-transaction-the-gasused-is-less-than-zero/43389/1 "2023-04-27T07:10:10Z")

</div>

I use the [DryRunTransactionBlock](https://docs.sui.io/sui-jsonrpc#sui_dryRunTransactionBlock) rpc to mock transaction, but the rpc retured gasUsed is less than zero? but actually is more than zero?  
example tx: [Sui Explorer](https://explorer.sui.io/txblock/AzcxMiWkTuzyEst3CY4AkYumUJrP3MERSEMXeCdaVEZa)