If you encounter TIN validation errors when transmitting an invoice, follow these two solutions:
Ensure correct NRIC and TIN mapping.
Verify TIN validity.
Start with Solution 1, and if the issue persists, proceed to Solution 2.
Solution 1: Ensuring Correct NRIC and TIN Mapping
Note: For normal invoices, the customer's NRIC is linked to the TIN number.
If the customer provides an NRIC number instead of a BRN, enter "NA" in the Company Registration Number field under the customer’s configuration.
Insert the MyKad number under Contact Details.
Transmit the invoice.
Solution 2: Verifying TIN Validity
This issue occurs when the TIN provided for the buyer is invalid.
Check the invoice status on the MyTax Portal—it will be marked as Invalid if the TIN is incorrect.
The error message confirms that the buyer's TIN is not valid.
Since TIN verification is managed by LHDN (Lembaga Hasil Dalam Negeri), you may need to contact an LHDN officer for assistance. They can help verify and correct the buyer’s TIN details.
To prevent future errors, always double-check the buyer's TIN before proceeding with the invoice transmission.