Two condition tokens are equivalent if they represent the same type of condition, even if not necessarily the same instance of the condition. For example, you could have two occurrences of an out-of-storage condition. Though equivalent conditions, they are not necessarily equal because they occur in different locations in your program.

To determine whether two condition tokens are equivalent, compare the first 8 bytes of each condition token to one another. These bytes are static and do not change depending on the given instance of the condition.

You might want to check for equivalence when writing a message about a type of condition that occurs in your application or when registering a condition handling routine to respond to a given type of condition.