When I run the Receiving interface i get an error that the period is not open. But all periods are open from Jun 14 through April 15.

Question

I am running the following inserts and all periods are open but I still get this error in the po_interface_errors table.
"Error: Please enter a GL Date within an open inventory accounting period.
Cause:        You provided a GL date that is not within an open inventory accounting period. 
Action:        Enter a date that is within an open period."
Here are the inserts.
INSERT INTO rcv_headers_interface
(header_interface_id, GROUP_ID, processing_status_code,
receipt_source_code, transaction_type, last_update_date,
last_updated_by, last_update_login, creation_date, created_by,
vendor_id,expected_receipt_date, validation_flag)
SELECT rcv_headers_interface_s.NEXTVAL, rcv_interface_groups_s.NEXTVAL,
'PENDING', 'VENDOR', v_transaction_type , SYSDATE, v_user_id, 0,SYSDATE, v_user_id,
v_vendor_id, SYSDATE, 'Y'
FROM DUAL;
INSERT INTO rcv_transactions_interface
(interface_transaction_id, GROUP_ID,
last_update_date, last_updated_by, creation_date,
created_by, last_update_login, transaction_type,
transaction_date, processing_status_code,
processing_mode_code, transaction_status_code,
po_header_id, po_line_id, item_id, quantity, unit_of_measure,
po_line_location_id, auto_transact_code,
receipt_source_code, to_organization_code,
source_document_code, document_num,
destination_type_code,
deliver_to_location_id,subinventory,
header_interface_id, validation_flag)
SELECT rcv_transactions_interface_s.NEXTVAL,
rcv_interface_groups_s.CURRVAL, SYSDATE, v_user_id,
SYSDATE, v_user_id, 0, 'RECEIVE', SYSDATE, 'PENDING',
'BATCH', 'PENDING', v_po_header_id,v_po_line_id,
v_item_id, v_quantity,
v_unit_meas_lookup_code,
v_line_location_id, 'DELIVER', 'VENDOR',
v_organization_code, 'PO', v_po_number,
v_destination_type_code,
v_deliver_to_location_id, v_destination_subinventory,
rcv_headers_interface_s.CURRVAL, 'Y'
FROM DUAL;

Answer 1

I went to Inventory > Setup > Organizations  
but I do not see a place to open a period under an organization. If there is another place to go let me know.
I looked under calendars but that does not have anything to do with periods as far as I can tell.