Looking at the Python code, the inventory_command/ data you send is NOT valid nor understood by the M7E. On the Raspberry pi install the MercuryAPI. Also see other posts like M7E Hecto Best way to update Online Database
Looking at the Python code, the inventory_command/ data you send is NOT valid nor understood by the M7E. On the Raspberry pi install the MercuryAPI. Also see other posts like M7E Hecto Best way to update Online Database