Do check on your customer's TIN,
as this is a foreign customer, you are to use TIN EI00000000020 in accordance with LHDN general TIN guidelines:
Our knowledge base article on General TIN : https://einvois.helpdesk.ooroboros.com/portal/en/kb/articles/title-when-can-i-use-a-general-tin-in-malaysia#Approved_General_TINs_and_When_to_Use_Them
LHDN guideline on general TIN:
In accordance with general TIN rules as well, the registration number of the customer has to be set to "NA"
Should you be using this customer for self-billed invoices, do ensure that the MSIC code is also filled in with the values "00000"
an example of a fully set up foreign customer profile is as below: