> For the complete documentation index, see [llms.txt](https://blockchainlens.gitbook.io/cardano-spot-check/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blockchainlens.gitbook.io/cardano-spot-check/troubleshooting/utxo-errors.md).

# UTXO Errors

## Transaction fails with error ValueNotConservedUTxO 

This error usually means the inputs and outputs don't add up.   It may be caused by many factors including the ones below:

### Reason 1:  Wrong calculation

You may have entered a wrong value in your command due to a wrong calculation.

Solution:  Double check your calculations and commands then redo the transaction if you find any mistakes in the calculations.

### Reason 2:  Multiple NFT or Token entries

While you are performing a transaction in a wallet that has multiple NFT’s or Tokens, the network may sometimes be confused and give this error.

Solution:  Select only 1 UTXO that has no NFT or Token in it, then redo the transaction with just that one transaction.   Note tht the UTXO you select must be able to accomodate the amount of the trnsaction including fees.  Your transacrion should complete without any errors and your NFT’s/Tokens will also still remain intact in their respective UTXO’s.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://blockchainlens.gitbook.io/cardano-spot-check/troubleshooting/utxo-errors.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.