PeopleSoft None, All and Null Function and Condition

None returns true if none of the specified fields contain a value

If None(fieldname or variable) then

Use the All function to verify if a field contains a value, or if all the fields in a list of fields contain values. If any of the fields are Null, then All returns False.

If All (fieldname or variable) then

If you want to check whether object is null, or it is valid object or not

If object = null then