This article is to assist if you are experiencing an error stating you are missing your customer's MSIC code.
Check on your customer's MSIC code,
do ensure that the MSIC code is filled in with the appropriate values, or otherwise with the values "00000"
Find more information below:
LHDN Specific guide : https://www.hasil.gov.my/media/uwwehxwq/irbm-e-invoice-specific-guideline.pdf
for Self-billed invoices where client doesnt have MSIC code : Page 20
an example of a fully set up non-malaysian customer profile is as below: