what does it means?
-PitoPI version 3.8.9
-PI Data archive version 3.5.7 (2017 R2)
-PI API 1.6.8
Said that can extend the maximum length of the character?
after that the manual said if you name length exceed 80 character userint1
how can i use the 1023 or 255 maximum length of the character?
The table you reference is just showing you how long the Point name can be based on different versions of the PI Server and PI API. It is a separate topic from the issue of mapping source points to target points.
There are three options for mapping source points to target points:
You will want to use the last option if your source point name is more than 80 characters. i.e. you can't use the first or second option.