> ## Documentation Index
> Fetch the complete documentation index at: https://moengage-add-partner-guide-reddit-ads-conversions.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Why Are Push Campaigns Resulting in an INVALID_SERVER_CREDS Error?

> Fix the INVALID_SERVER_CREDS error in MoEngage push campaigns by verifying your FCM sender ID, server key, and Private key file configuration.

## Problem

In Push campaigns, under campaign failures breakdown, the following error is displayed:

INVALID\_SERVER\_CREDS

<img src="https://mintcdn.com/moengage-add-partner-guide-reddit-ads-conversions/OFnXZO4JHT_S42El/images/moengage_ea004e.png?fit=max&auto=format&n=OFnXZO4JHT_S42El&q=85&s=d37c1fc85851060c637a3e71f0430bc8" alt="" width="506" height="198" data-path="images/moengage_ea004e.png" />

## Solution

* You are receiving the "INVALID\_SERVER\_CREDS" error because the sender ID and server key provided may belong to different GCM or FCM projects.
* To resolve this issue, use the configured sender ID and server key.
* Ensure that you have the accurate FCM keys (or certificate) in your Push settings and include the ServiceKey.json file instead of the google-services.json file (if you have added it).
* Verify the **Private key file (Recommended)** on the MoEngage dashboard.
  * Open the private key JSON file using any text editor.
  * Check that the *project\_id* mentioned in the JSON file matches the Firebase Project ID.
  * If you already have a private key on the Service Accounts page, you need not generate a new one.
    <img src="https://mintcdn.com/moengage-add-partner-guide-reddit-ads-conversions/IYWlV9AQXcEN70y8/images/moengage_77d443.png?fit=max&auto=format&n=IYWlV9AQXcEN70y8&q=85&s=916a35b1e44ebf2b4cb68251405ece81" width="1600" height="417" data-path="images/moengage_77d443.png" />
    <Info>
      In FCM projects, the sender ID can be found in the google-services.json file.
    </Info>