Field help (NCSTRANTY1) 

Use this field to identify a type of business transaction which is commonly carried out in your organization. For example, if your company returns faulty purchased goods to the supplier select the value 'Purchase orders'.

To create the task you must now select an Action code that has matched, or linked the selected transaction type with a specific action (business process). For example, you could link the value 'Purchase orders' with a 'returns' action such as 'Return to supplier'. The resulting matched, or linked, business process plus transaction type is given the general term 'Action'. Each 'Action' (or task) should reflect a 'process' commonly carried out within your organization.

The list of transaction types is defined in Miscellaneous table 807 - Transaction type.