It would appear that you are experiencing a UUID mismatch error when pushing documents to the LHDN MyInvois portal.
Navigate to the MyInvois portal (Organization Owner / Representatives account), check which environment the document is being pushed to.
To confirm the environment :
Check if the document already pushed to the alternate LHDN environment.
if you are currently using LIVE but have used PREPROD previously, this means you have to go to PREPROD and check If the document is already present in PREPROD)
In Zoho Books, check the document's UUID and Public Link
Cross-check the TIN and BRN values.
In Zoho Books > Settings > Marketplace > Installed Extensions > e-Invoice Malaysia > View Details > Configure, check the TIN and BRN.
In the MyInvois portal (Organization/Representatives account), navigate to the profile icon>view taxpayer profile , locate the TIN and BRN values.
Check if the TIN and BRN values in Zoho Books match exactly with the values provided by LHDN.
Important: Confirm that the values used are the Organization TIN and BRN (not personal)
Please do not hesitate to contact us if you have any questions or require any assistance.