Validity of 100 rs stamp paper

Telangana state

Your title state --- Validity of 100 rs stamp paper

But you never mention this in your query 

I appreciate you said name of your state , thanks 

So what you want to ask question 

1)  Agreement both the parties and witnesses sign

2) It is notarized

3) When an agreement registerd 

Now your query is ambigious because you need to tell which agreement you are making , what are terms and conditions , for which purpose you are making . So we can ans. properly

Problem in this query you are asking question , but you are not telling essential part of the question to interpret question . Like What is name of ? (after of nothing mentioned , whether you are ponting to structure , car , man , or some thing else , your query is very ambigious from legal point of view) 

1. Sale agreement on 100 rs stamp paper is not valid.

2. Sale agreement Notary registered is not valid.

The agreement of property sale transaction has to be registered with the sub-registrar with duly paid charges of stamp duty and registration charges.