Field help (AYAINTMLT1) 

Select 'No' to perform a mapping of N Xtend fields to N values of a same X3 parameter.

The column 'Index' can then be entered and is used to enter the index of the 'interface parameter' (X3 parameters) to be valued with the XTEND field value.

SEEREFERTTO For further information, see the paragraph on the multiple mapping.