Email Subject vailidation

Hello,

I want to validate the email subject if it has defined formart

Format : Request for - account number - qwd123okj873huf

Request for - account number- : these are static one
qwd123okj873h : this is dynamic one where i need to validate it has 15alpanumeric character alone.

Planning use ismatch activivty - Could you pls help me on validating the 15 digit alpanumeric character

Note: No specical character allowed in that 15digit

Thanks

Got it - [0-9A-Z]{17}

Thanks

Hi,

Do you allow more than 16 characters such as 20 alphanumeric characters?
If nope, the following pattern might be better.

"\s[0-9A-Za-z]{15}(\s|$)"

Regards,