Receiving Purchase Order using LPN get an error message "invalid lot number"

Hi,

I have an issue when receiving a purchase order having multi item lots.

Steps:

1. Receipt PO item A lot A01 to LPN1

2. Receipt PO item A lot A02 to LPN1

3. Drop LPN (when those lots have more than 40 characters )

4. input confirmation field for lot number

5. Error: invalid lot number, then the characters in confirmation field decrease into 40 chars.

How to fix this issue ?

This issue happens to every lot numbers which have more than 40 chars

Thanks,

Wijaya