Thanks @yuhuisg @jennifer_dungan for your inputs. One last thing I would like to know is when I change existing prop to enable it as list, what is the impact? I would like to determine the scope of regression after enabling the list prop.
Thanks
Srikanth
The impact should be minimal.. basically, once you turn on List and choose a delimiter, any time that delimiter is seen the data will be split on it.. if no delimiter is seen, the value should track as always (one item, on one row).
What you should be aware of however are these:
1. Choose your delimiter carefully with a character that is unlikely to be a part of the string that is being sent... as in, if you are send author name, sometimes those might be in the system as "lastname, firstname" and if you use comma as your delimiter, this user actually gets split into two rows...
2. Your prop is still limited to 100 characters max... so if you pass a lot of values, your data can be truncated... unlike your three dedicated "List" dimensions (which have up to 255 characters per item, meaning that you can pass a large number of items to Adobe)
3. You're already encountered this one, data collected before "list" was enabled won't be processed as a list... so if you need to look at historical data, you need segments....
Now another option for you, since you are doing search filters? I assume those values are limited and don't change much? You could just use Classification Rule builder to set up a classification for each filter, so that your prop continues to track the way it always did, but you have a specific classification for "filter1" or "filter2", etc... or to create a segment to look for each filter... leaving your prop set up untouched...
Or use one of your dedicated List dimensions instead of changing your prop. (You can even use your list items as a general collection for multiple things... use a prefix on each item to identify it, then use classifications to split the filters to the "Filters Classification" and the "Use 2" to a different classification...
There are many ways collect and process the data.