I got an email from LHDN stating my client Secrets are expiring.
Introduction
Eventually after some time, according to the expiry duration you selected when generating client ID and secrets, LHDN will send you this email :
How to regenerate new Client Secrets
This is a normal part of the e-invoicing process, not to worry.
To explain,
When the client ID and secret was generated, a selection was made for an expiry date for the Secrets:

This is a security precaution set up by LHDN to ensure constant activity and conscious renewal of ERP systems with LHDN.
What this means is that either before or when the Client Secret are going to expire, as per the instructions by LHDN, you will need to : Login to your LHDN MyTax portal,
Click "regenerate secrets"
Note: you will ahve a new option to select a new secret expiration date,
you may change this to whatever interval available you desire.
Once you generate these new secrets, IMMEDIATELY replace the secret in Zoho Books Plugin Config,
this is because your old secrets will not be valid anymore upon secret regeneration.
With this you will have new client Secrets to use with Zoho until the next expiration date.
You will need to replace the old client secret in the plugin config page as soon as these new secrets are generated as the old ones will no longer be operational.
Once you update the Client secrets to the new one in plugin config page, you may save and proceed with e-invoicing as normal.
Please do not hesitate to contact us if you have any questions or require any assistance.
Related Articles
ERROR: LHDN portal invoice UUID : (number) LHDN invoice number (NULL) different from zoho invoice number
Error in question : It would appear that you are experiencing a UUID mismatch error when pushing documents to the LHDN MyInvois portal. Solution: Navigate to the MyInvois portal (Organization Owner / Representatives account), check which environment ...
How to Submit an Invoice to LHDN
Introduction Learn how to seamlessly submit your invoices to the LHDN MyInvois portal directly from Zoho Books. Ensure compliance with just a one-click. <br> Creating an Invoice Navigate to "Sales" module In the "Invoices" module, ...
Canceling an LHDN Submission
Introduction Learn how to seamlessly cancel documents after submission to LHDN from within Zoho Books. No LHDN portal login necessary! Documents can only be canceled within the first 72 hours of submission Canceling documents in Zoho Books Click the ...
How to know when LHDN MyTax Portal is having issues
Introduction This article covers the error code below which is most commonly seen when the MyTax Portal is experiencing issues: Submitting invoice has issue. Refer to LHDN link https://preprod.myinvois.hasil.gov.my/documents Determine the specific ...
How to Submit a Credit Note and Refund Note to LHDN
Introduction Understand how to submit credit notes, including refund notes, to the LHDN MyInvois portal. This guide ensures refunds and corrections are managed effectively using credit notes. Note : Credit Notes must always be created in reference to ...