# Invalid returnReceipt

**URL:** <https://forum.fuel.network/t/invalid-returnreceipt/1713>\
**Category:** Fuel Network\
**Created:** [January 30, 2023, 12:10pm UTC](https://forum.fuel.network/t/invalid-returnreceipt/1713 "2023-01-30T12:10:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![chappie1998](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/chappie1998/32/971_2.png) [@chappie1998](https://forum.fuel.network/u/chappie1998)\
**Post date:** [January 30, 2023, 12:10pm UTC](https://forum.fuel.network/t/invalid-returnreceipt/1713/1 "2023-01-30T12:10:40Z")

</div>

The below function is throwing an error.

````plaintext
        balance_of(contract_id(), BASE_ASSET_ID)
    }```
![Screenshot from 2023-01-30 17-37-14|600x500](upload://oRf5vorJm5Za0PZEgODAYxAcjfC.png)
````

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<div class="post-metadata">

**Author:** ![Simon](https://avatars.discourse-cdn.com/v4/letter/s/f07891/32.png) [@Simon](https://forum.fuel.network/u/Simon)\
**Post date:** [January 30, 2023, 2:58pm UTC](https://forum.fuel.network/t/invalid-returnreceipt/1713/2 "2023-01-30T14:58:16Z")

</div>

Hi!

It’s a bit difficult to work out what’s going on from your code snippet, and the image you uploaded isn’t rendering.

Could you post the full code and the error?