We apologize for not let you know b

We apologize for not let you know before now that as we checked your L/C.
To avoid any discrepancy, we would like to have additional amendment application required for sample as follows :

ผลลัพธ์ (อังกฤษ) 2:

We apologize for not let You know that now before we checked As your L / C.
To Avoid any discrepancy, we would like to have Application Additional amendment required for sample As follows:.