I am developing a checkout extension for my company, the postal code is replaced with the address id in my company database but
Postal code if containing letters
I → 1
B → 8
L → 1
O → 0
S → 5
Z → 2
will be changed to numbers that are similar to it, but if the Postal Code accompanying the letter is not faulty, it will remain the same
ZO → 20
ZA → ZA
Is there any way to fix it?