> For the complete documentation index, see [llms.txt](https://dexiejs.typogram.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dexiejs.typogram.co/dexieerror/dexie.incompatiblepromiseerror.md).

# Dexie.IncompatiblePromiseError

#### Inheritance Hierarchy

* [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error)
  * Dexie.DexieError
    * Dexie.IncompatiblePromiseError

#### Description

*Obsolete since Dexie 2.0.0*

**This error is removed in Dexie v2.x because from that version and forward, native promises are accepted to return from a transaction scope.**

Happens only in Dexie v1.x when returning an incompatible Promise from a transaction scope. You need to verify that you are only using Dexie.Promises for all async code withing any transaction scope.