During recording qtp looks at the object and stores it as

test object.For each test object QT learns a set of default

properties called mandatory properties,and look at the rest

of the objects to check whether this properties are enough

to uniquely identify the object. During test run,QT

searches for the run time obkects that matches with the

test object it learned while recording.

Object identification:
QTP will identify the object in the following manner during 
the running.
It will under stand the script statement.
Then it releases that it needs to from some action on some 
object, for that it needs some information about that 
object.
For that information it will go to the object repository 
and get the information from their.
With that information it will try to identify that object. 
If it all the object is identified it will perform action 
on that object. Here the information means object 
properties.
And now the question is that how it is learning those 
properties, to identify the objects.
This is the point where every one thinking his one style, 
but the fact is that. That the process of learning is like 
this.
 There are two types of object identification that QTP 
normally uses apart from the ordinal identifiers.
In general there are four types of properties that QTP 
having.
1.	Mandatory properties.
2.	Assistive properties.
3.	Base filter properties.
4.	Optional filter properties.
And ordinal identifiers like location, index and creation 
time.
As I told that QTP will be using two types of object 
identification.
The first one is normal identification.
In this identification the learning of the properties will 
be in the following way.
First the QTP will learn all the mandatory properties at a 
time. And with these properties it will try to identify the 
object if at all it feels these properties are sufficient 
to identify the object uniquely, and then it will stop 
learning and use those properties. If at all it feels these 
properties are not sufficient to identify the object 
uniquely, then it will learn the first assistive property. 
And try to identify the object with those properties 
(mandatory and first assistive property), if at all it 
feels that these properties are sufficient to identify the 
object uniquely then it will stop learning and use those 
properties to identify the object. If it feels these 
properties are not sufficient to identify the object 
uniquely. Then it will learn the second assistive property 
and repeat the same process till it identify the object 
uniquely. If at all it fails to identify the object 
uniquely by using all these properties also. Then the 
ordinal identifiers come into picture. This is the process 
QTP identifies the objects when the smart identification is 
disable.
The second type of identification is smart identification.
In the process QTP will be learning all the mandatory, base 
filter properties and optional filter properties at time. 
But the identification process is as follows.
If you invoke the smart identification then also first QTP 
will try to identify the object by using normal 
identification process. That is the above process apart 
from the ordinal identifier. Now it will not use the 
ordinal identifiers. If the normal identification fails 
then it will come to the smart identification. And forget 
about the normal identification also all those properties 
learnt in the normal identification. And now it will using 
all the base filter properties at time and tries to 
identify the object uniquely. If at all it feels that these 
are sufficient then it will use these properties to 
identify the object uniquely. Otherwise take the first 
optional filter property and same process will continue as 
above till the object is identified uniquely. If at all the 
smart identification is also fails then it will go to use 
the ordinal identifiers. This the actual process of 
identification. If we have any questions regarding this 
please go head and send me the e-mail to me or directly you 
can contact me. only in the mentioned hours only.(8.00 PM 
TO 8.00AM)
                                                            
                       Parusuram challa,
                                                            
                     pramchalla@gmail.com
                                                            
                         (+91)9822769949