> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-4000-to-4099/e4036.md).

# Error 4036: Character disallowed in JSON in argument to function at position

| Error Code | SQLSTATE | Error                    | Description                                                                 |
| ---------- | -------- | ------------------------ | --------------------------------------------------------------------------- |
| 4036       |          | ER\_JSON\_NOT\_JSON\_CHR | Character disallowed in JSON in argument %d to function '%s' at position %d |

## Possible Causes and Solutions

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