Work item text change

Question

Hi,
I am using standard task 8057: INVOIC input error MM
I want to display invoice number in place of work item text.
we can assign any element present is task container  to work item text. But invoice number is not there in container of this task.
I need to take the Idoc number present in the container and read invoice number from one of its segments. Where and how can I do this processing?
Please help
Thank you.

Answer 1

hi,
i have never worked with idocs. so would not be able to guide you for anything other than the workflow logic.
i am also not aware how to get the invoice number from idoc no. but if you are able to do that then you can try the following solution.
firstly, we will deactivate the link for the standard task 8057.
then we will create a custom WF which will have the triggering event as same as that of task 8057.
we will activate the link for this WF in SWE2 with BO IDOCINVOIC and event INPUTERROROCCURREDMM.
this WF will have first step as an activity. this activity step will have a custom background task which in turn will call the custom method which will be used to find out the invoice no.
this custom method will be present in the subtype object (z object that you have created).
now you have the invoice number that you wanted.
the 2nd step of the WF will be the custom task which will be a copy of the standard task 8057 wirth some changes.
we will remove the triggering event from the custom task. (it will have no triggering event).
then our job is done.
one more thing needs to be taken care of. i.e., delegation between IDOCINVOIC and ZIDOCINV must be defined. by doing so we will be able to call the custom method of ZIDOCINV in our step 1.