Check if Data Instance Exists

There are two ways to check if data instance exists:

• Function “pxDoesHandleExist”. But in order to use it - you need to know pzInsKey beforehand. Not something you have before creation of the instance. It is possible to generate it manually, but let’s try to avoid it
• When rule and/or function pxDoesObjectExist. Works exactly how you expect it to. Just run it in the context of the item you need to check

Source