You can use a number sequence to get the field value. So, instead of the source field value, the next available number in the number sequence is the applicable value.

Standard procedure

1.	Click Connectivity studio Integration Design.
2.	On the Message tab, in the list, find and select the desired message.
3.	Click Edit.
4.	In the Mapping section, in the Target record pane, in the list, find and select the desired target record.
5.	On the Mapping tab, on the Field mapping tab, in the list, find and select the desired field mapping.
6.	Click the Field options tab.
7.	Select the Number Sequence check box.
8.	In the Number sequence code field, enter or select a value.
9.	Close the page.