Can someone please clearly explain to me what the "Date of last activity" specifically refers to. I have heard some people say that it refers:

1) to the last time you defaulted on a payment or
2) the last time you made payment, or
3) the last time you acknowledged the debt to the original business/place you owed the debt to or to a collection agency or
4) the last time you acknowledged you were in fact the person they were asked for

I am currious to know which exactly is which. So once the date of last activity has been clearly defined; Is it 6 years from that 'date of last activity' that they can not sue you AND the record of the debt would be erased from any credit rating data base (E.g. Equifax) after those 6 years as well?

Thank you very much!!

DATE OF LAST ACTIVITY meaning the last payment or transaction made on this account
CREDIT HISTORY AND BANKING INFORMATION: A credit transaction will automatically purge from the system six (6) years from the date of last activity.
All banking information (checking or saving account) will automatically purge from the system six (6) years from the date of registration.

COLLECTION ACCOUNTS: A collection account under public records will automatically purge from the system six (6) years from the date of last activity.

Here are your rights:
To clear your credit report:
If any of your accounts were charged off more than seven years ago, the damaging information on that account should have been erased from your credit bureau file, and a collection agency cannot reenter the information. This process take place under a federal law, called the Fair Credit Reporting Act (FCRA), that regulates the actions of all creditors and credit reporting agencies. The law is designed to protect consumers, creditors, and credit reporting agencies. The FCRA enforces the seven-year limit; specifically, it says that information in a consumer's file concerning accounts that have been charged off or placed for collection must be completely erased after seven years from the date of last activity; last activity generally means the date the creditor charged off the account. On the copy of your report look at the date of last activity.