===== Field Purpose, Usage, and Notes ===== This field is used to save the variables used in any transaction (order, estimate, service ticket, etc.) line item. The data within the field is saved in XML format. ===== Field Structure ===== The top element is . Within the Parameters, we can define any number of individual below it. Each Parameter is associated to a variable that is used in the transaction item. Therefore, , and should be defined for each parameter. In addition to those three child elements there are other optional child elements that can be added to the parameter based on the variable it defines.The structure of ParamStr field is shown below. Note: Any optional elements are shown in green.