India

Here are the details to validate tax registration numbers as per India's validation rules:

Country Code: IN

REPORTING_TYPE_CODE/ Validation Type	REPORTING_TYPE_NAME	No of Digits	Format	Check Digit	Check Digit Validation	Default Validation	Example TRN No.
ORA_IN_TAN	TAN for India	10	4 letters + 5 numbers + 1 letter	No	No Check Digit Validation	None	Good: ABCD12345A Bad: ABCD43 (Invalid format, too short) ABCD12345A6 (Invalid format, too long)
ORA_IN_GST	GST Registration Number Validation for India	<=20	No Check on the Format	No	No Check Digit Validation	None	Good: AC6556973V 123AC64197501 654AC9676268U AC6355354U4546
ORA_IN_PAN	PAN for India	10	5 letters + 4 numbers + 1 letter	No	No Check Digit Validation	None	Good: ABCDE2345A Bad: ABCD43 (Invalid format, too short) ABCD12345A6 (Invalid format, too long)