Hi Sree,
you are trying to post the material document through movement type 561,
That means initial entry of stock balance.
Please open the posting period for plant 1100, but the error is displaying for the company code 1000.
Please open the posting period for company code 1000.
As per my perception plant 1100 is assigned to company code 1000.
Please check the assignment for the specific plant and open the posting period 2016/07.
Thanks & regards,
Ankur Chauhan