[Myinfo v3] Error: Invalid PKI Signature

What is the 'Invalid PKI Signature' Error?

This usually occurs during in your /token or /person API call, where the Invalid PKI Signature error is caused by a mismatch of certificate used to sign your API calls and the one uploaded into your app configuration on our portal.

For example, a partner is using certificate A to sign the call but certificate uploaded into the app configuration on our portal is certificate B.

What can you do to rectify this error?

You can start by check the certificates:

1. Download the certificate that you have previously uploaded into your app configuration on the portal. 
2. Compare the serial number of this downloaded certificate with the serial number of the certificate that you used to sign your API call(s). 

For more details to view or edit your app configuration on the portal, you can refer to this.