I'm looking for a technical reason as to why an Activity level length cannot be modified after it has been created. We are using four activity levels to identify an Activity in Lawson. We are wanting to change the length of level four from 8 characters in length to 9 characters. I've done some playing around in one of my Lawson sand boxes, updating the ACACTGRP file in our product line database. I set the LEVEL_SIZE_04 value for our primary Activity Group to 9. So far, what we've found is that the VAR-LEVELS value for each Activity record in AC10 was appended by adding a zero to the level four value. What repercussions can we expect from this change? I know the documentation states that you cannot change a level length after it has been created. I'm looking for a technical explanation as to why. Any help would be appreciated. Thanks.