The meeting will be hosted by Samoa in Apia in early October.
A release from the Ministry of the Prime Minister and Cabinet (MPMC) said the talks were scheduled for early next month.
However, American Samoa had communicated to Prime Minister Tuilaepa Lupesoliai Sailele Malielegaoi requesting to postpone the meeting to October to allow the territorial government to finalise issues from their end to be tabled in the upcoming meeting.
As one of the three central government agencies, the MPMC is tasked as the implementing agency to organise the event.