This error occurs if the database logged into does not have a valid posting period. All add-ons need an active posting period, and therefore, you should create a new posting period and restart the SAP client.
SAP Issue - "No current period"
This error occurs if the database logged into does not have a valid posting period. All add-ons need an active posting period, and therefore, you should create a new posting period and restart the SAP client.