It is upon the court to accept the suit through GPOA or not?

the GPOA should be registered 

regards

GPA is valid, value of amount has not effect on GPA.

Notorised POA is sufficient

no consideration is passing from Q to X [the POA as described does not appear to be a POA coupled with interest]

X has simply assigned his right, to recover his money from Y, to Q, without any consideration passing from Q to X for the said assignment

This GPOA is not legal and is wholly illegal as to institute a suit GPOA don't work and as the amount is big and has to be collected then what GPOA will do. So whenever you file a suit , the presence of the Ist party is must not on each date but on the preliminary dates  as the GPOA holder can file papers and can take suitable steps on behalf of the Ist party but can't institute the suit and later on in writing by his appointed person and in collection of money he has to give in writing with the consent of the other party in a form of a settlement, so please take appropriate steps as suggested.

it is not necessary to register POA for filing suit and to enter into settlement 

2) instead of general POA specific POA should be executed duly stamped and notarised 

The power of attorney is sufficient no registration of same is required for a suit. So it is valid .

Summary suit will have to be filed by Mr. X for the recovery of the money 

Recovery suit, summery trial still takes years.

You can file summary suit to recover your money with interest 

In absence of any specific admission by Y of loan, regular money recovery suit has to be filed under the commercial courts act

There is provision of pre suit mediation which is compulsory under the commercial courts act

A summary suit can be filed before the civil court for recovery of the amount further some proof amount that is cash to be given also the source of income for same.

Dear Client,

You should file a simple recovery suit instead of Summery Suit. Suit may be file on the basis of GPA

It needs to be registered. Summary suit can be filled

Notarized power of attorney has no validity in the eyes of law.

Every power of attorney needs to be mandatorily registered, after payment of stamp duty in the presence of two witnesses at the sub registrar office.

For advising as to which remedy hi shooter wale please state as to when was the loan amount forwarded? In which year

Since this POA deed has been executed in favor  of  Y by  X  for the purpose  of court  case only, there is no legal infirmity in it, as well as since  this  is regarding  some  money transaction  then the  POA deed  need not  be  by  a registered document

There is no sufficient  evidence  for the  money transaction  hence  summary suit  may not  be  maintainable, however money recovery  suit  can  be  filed  based  on the bank  account statement and the bank transaction as well as the  legal  notice.

Dear sir

You can file the suit by your self in the civil courts.  And this suit will be recovery suit. 

But If you have given GPOA to other person then also write in the POA that Mr. Q will return  the amount received from Mr.  Y to Mr.X as soon as possible