Stock transactions that increase stock levels:
PORC - Purchase Order Receipt
GDRC - Goods Receipt via the Stock Transaction grid - currently only used by Staffordshire Police
RQRT - Requisition Return
STRT - Stock Returned to store
CTRT - Collection Note return
TRNT - Transfer To warehouse
SNRT - Serial Number Return
Stock transactions that decrease stock levels:
RQIS - Requisition Issue
SIIS - Sales Invoice Issue
PORT - Purchase Order Return and Returns to Supplier via the stock menu
TRNF - Transfer From warehouse
DSP - Disposals
Stock transactions that can increase or decrease stock levels:
ADJT - Stock Adjustments
STKE - Stock Take adjustments
INPA - Invoice Price Adjustments for FIFO