Dear SAP gurus,
Thank you for your help and for taking the time to read this issue.
I am currently in the implementing stage of HR-Renewal at a client of mine and am facing few difficulties among them an issue concerning the fresh mass hiring feature. 
My current specific issue deals with Input help functionality embedded in the webdynpro (WD4A) and the excel template specifically input help originating from table values (versus domain values which work perfectly) after following the guidance provided in March, 2014 version 1.3.1 Mass Hiring Customization Cookbook available from SAP note.
Whenever using inheritance search help derived from the backend structure and specified in the design time tool value help works like a charm in my excel template but not in the WD4A. After F4 on the webdynpro, the page opens a value-empty two columns list popup titled “Validate: Export” ( which seems to be a title belonging to another user-command within this WD4A) instead of an expected available value list generated according to the field where F4 event originated.
Please check file \fakepath\wd4a1.png
After trying all possible combinations available both from the design-time and the WD4A configuration I ended up with the following conclusions:
- Input help derived from domain fixed values works like expected in both WD4A (either display as a standard F4 or a dropdown value list) and excel template.
- Input help derived from table values does not work as expected in the WD4A but does in the excel template.
- Input help specified on the design time tool thru the "Description of Input Help Determination for Field” affect both WD4A and excel template behavior but only work as expected in our excel template: this is a valid statement both with data binding service from SAP_PA (w/o a text field name) or manual values. Whether to Enable Help Value in Excel or Not only affect our excel template.
- When leaving blank the input help specification in the design time tool, a “search help” field becomes available with the WD4A where I can bound a search help to a specific field which in this case end up with the correct functionality in the WD4A [as a standard F4 but not as a dropdown] and of course does not on our excel template. Back in the design time tool, enabling help value in excel after this step does not seems to resolve it too.
Furthermore I also have followed the provided guidance on section 6.6 of the mass hiring cookbook available from SAP note which does not resolve this issue combining it with all possible previously stated situation.
I am trying to achieve F4 functionality within WD4A and excel template ideally as drop down values in both environment. At present I have two mass hiring action: Z_SHRPAO_XX_MASS_HIRING and Z_SHRPAO_ZZ_MASS_HIRING.
Z_SHRPAO_XX_MASS_HIRING has many fields and input help defined at design time level. Works perfect in excel but fails in the WD4A
Z_SHRPAO_ZZ_MASS_HIRING has only two fields defined with F4 search help at WD4A level. Works perfect in the WD4A but fails in excel.
I have reviewed all SAP note available at present but none address my current issue.
Do you gurus knows if it is possible to have both value help?
I am going to raise a SAP ticket after posting this here just though I could be lucky and receive input here!
Thank you.
Antoine