Audit Question - Alpha Characters in a Numeric Field

 Our auditors have questions/concerns regarding how JDE handles alpha characters entered into a "numeric" field on the screen.  Specifically, if a user is entering cost and accidentally enters an alpha character in the number, it gets scrubbed out and the value without the alpha character is written to the database.  They feel this is a deficiency and should display an error on the screen instead of just writing the scrubbed value to the DB.  Is there anyone else out there who has encountered this audit concern and how did you address it?

Example:

Enter 1OO ('o' instead of zero) results in a 1 being written to the database.