ITF Masters IPIN

If you are applying for an IPIN for the first time make sure
you select ITF Masters IPIN not the pro tour IPIN costing $70.
The ITF Masters IPIN is FREE to obtain and must be renewed
each year for no charge and is needed to enter ITF Masters
tournaments.
 

                    IPIN doubles error message tips

Problem: If the IPIN site advises your partner is ineligible
when you try to add them with their IPIN

Solution : Your partner has to renew their IPIN by logging into
their own IPIN and in their profile follow steps to renew IPIN. 
Once this is done you can add them as partner with their IPIN.

Problem: Trying to add a partner with their IPIN and you are
told they are already entered when they are not.

Solution: Ask your partner to enter the doubles and select
partner from the pool. Then you can login to IPIN  and add
them as your partner with their IPIN