Linking document info record and purchase order

Question

Hi all,
I hope that someone can help me because I'm having a problem with creating links between document info records and purchase orders.
By default in SAP I can create links between document info record and purchase order ITEMS! When I create that link, I can see it in document info record under Object links tab, but when I double click on the number of purchase order nothing happens (I expected that this purchase order will open).
Why is that so?
Why can't I access purchase order from document info record even though the link exists?
The other question is about creating object links to purchase orders, not purchase order items! Is it possible to link document info record with purchase order?
I would appreciate quick answer because we're in the middle of a project and we're stuck with that problem.
Thanks!

Answer 1

Hi Karlo,
         As you mentioned, object links could be linked to Purchase order items. In customisation you maintain these entries under the node SPRO > Cross Application Components> Document Management--> Control Data --> Define Document Types --> Define Object Links.
There are many links in the standard system (possible entries).
The system automatically determines the screen number (dialog box) where the key data for the object is maintained for document maintenance.
You can check the screens when the screen entry is missing or contains errors by doing the following:
Start the Object Navigator and display the objects for the development class  CV.
Expand the function group 130. The structure nodescreens lista all screens that can be used for object links.
You can make an object link to SAP objects that are not shown in the possible entries list. To do this, proceed as follows:
In the standard system, there are already two special screens for the module pools SAPLCV130 and SAPLCV140 for the linked SAP object.
You must create two new screens with the same number for the module pools SAPLCV130 and SAPLCV140 .
The processing logic must follow that of screen 1204 in program SAPLVC130.
Create function module OBJECT_CHECK_XXXX (XXXX = object name)
If the object can be classified, this function module already exists .
Otherwise copy the function module for linking equipment DOCUMENT_CHECK_EQUI and change it as required for the new object.
Hope the above instruction helps in solving your problem,
Sojan
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