Map default values in Header based on multiple values in the line item

Question

Hi
I have a scenario in which the Header field of an IDOC should be populated with some default values based on some mixed mvt types in the line items.
eg:
Header -
> Delivery type -
> needs to be mapped to A (for X of line item 1)or B (for Y of line item 2) or C (for Z of line item 3 )
based on line items field
line item1---> mvt type---> X
line item 2-->mvt type----->Y
line item 3 -
> mvt type -
> Z
mvt types doesnt necessarily have to come in that order and even the same mvt type can repeat in multiple line items.
Can we achieve this logic in XI ?

Answer 1

I think if you include removeContext, Sort, SplitByValue (on Value Change), CollapseContext to mvt type in all line items and then use ifelse condition to achieve your result.
I will give an example of line Item1
mvt type --->RemoveContext ->Sort>SplitByValue(on value change) --> CollapseContext
Use the above mapping to IF function and check if it is having X, Y or Z then map the appropriate value to target field.
Do the same for rest of the line items.