Why Are Push Campaigns Resulting in an INVALID_SERVER_CREDS Error?

Problem

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

INVALID_SERVER_CREDS

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.
  
  info
  Information
  
  In FCM projects, the sender ID can be found in the google-services.json file.