# Newly created apps return "Signature is invalid" 3712 error code **URL:** \ **Category:** Meeting SDK\ **Created:** [February 15, 2024, 3:17pm UTC](https://devforum.zoom.us/t/newly-created-apps-return-signature-is-invalid-3712-error-code/103930 "2024-02-15T15:17:29Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![nfayad](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/nfayad/32/35015_2.png) [@nfayad](https://devforum.zoom.us/u/nfayad)\ **Post date:** [February 15, 2024, 3:17pm UTC](https://devforum.zoom.us/t/newly-created-apps-return-signature-is-invalid-3712-error-code/103930/1 "2024-02-15T15:17:29Z")
**Meeting SDK Type and Version** Meetingsdk 3.1.6 **Description** I already have an application that is working as intended. I wanted to create another application to have a different environment where I test. I swapped both the Client ID and Client Secret. I made sure that the key that is passed to the SDK is the same one I used to generate the token. Simply swapping to my older credentials (Client ID and Client Secret), allows me to join the meetings again. **Error?** “Signature is invalid” 3712 error ---
**Author:** ![nfayad](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/nfayad/32/35015_2.png) [@nfayad](https://devforum.zoom.us/u/nfayad)\ **Post date:** [February 18, 2024, 4:40pm UTC](https://devforum.zoom.us/t/newly-created-apps-return-signature-is-invalid-3712-error-code/103930/3 "2024-02-18T16:40:21Z")
Resolved here > [@"Signature is invalid, errorCode: 3172, JOIN\_MEETING\_FAILED"](https://devforum.zoom.us/t/signature-is-invalid-errorcode-3172-join-meeting-failed/104066/3): > > It was a silly mistake on my part. In the “Embed” section, I had left the meeting SDK untoggled. I assumed that this was only toggled to provide you with the download links of the SDKs. Toggling it resolved my issue.