MODCHQ - SET UP AND MAINTENANCE Ó UNCTAD – SITE (V1.15) 10.22 Operational Environment Under this option the following tables can be maintained. 1.    Customs Office; 2.    Transit shed; 3.    Customs Warehouse; 4.    Examining Officer; 5.    Declarant; 6.    Carrier; 7.    Company; 8.    Bank. The method of updating these tables is identical. The Customs Office is shown as an example. Fig. 10.16  MODCHQ: Functions: Database Management: Operational Environment: Customs Office When a table contains coded information from another table, e.g. Customs Offices with Modes of Transport, then these linked codes must already exist in the appropriate table. Not  all  fields  of  the  table  update  screens  may  be  visible  without  activating  the scroll bars and moving to the bottom of the form e.g. the field that displays links between office and modes of transport is not visible. To complete a new record you need to first ‘Create’ then ‘Update’. See Preferences  for details. Transaction Controls Under this option the following tables can be maintained. 1.     Budget; 2.     Tax; 3.     Attached Document; 4.     Processing Program; 5.     Accounting Transaction; 6.     Country; 7.     Currency.