DMS EKKO missing link from Object side

Question

Hello,
i have created a new Document typ with Object links: IFLOT (functional location), EKKO (Purchase Order) (We have created a new Screen 9001 and implemented it in SAPCV130, SAPCV130 and set all needed customzing settings.) and LFA1 (Vendor).
My questions:
1. I could not find a link (or Button) on Purchase Order side in transaction ME22N/ME23N to open the assigned Documents.
How can I implement this link?
2. If I create a DIR in CV01N, I like to type the value in Object link EKKO (Purchase Order) manual and the system has to take the value LFA1 (Vendor) automatic from the Puchase Order. 
How can I solve this request?
Thanks in advance for your comments.
Best Regards,
Melanie

Answer 1

Hi Melanie,
regarding your questions I hope that the following information could be useful for you:
1. I could not find a link (or Button) on Purchase Order side in transaction ME22N/ME23N to open the assigned Documents.
How can I implement this link?
Based on your description I would kindly ask you to check in customizing
under
Cross-Application Components
>> Document Management
   >> Control Data
      >> Maintain Key Fields
if the entry 'EKKO ME33K EBELN' exists. Please make sure that the
transaction code ME33K is maintained here too.
To grant that allways the currenct screens and authorizations were
called please maintain also the value "1" into the "Authorization"
column. For further informations on this maintainance please see the
SAP note 1066915. It's important that you not enter the mentioned
screen number wihtout the leading "1" as this number is added
automatically by the system (e.g. object MARA 1201 maintain like MARA
201). You can do this in customizing under:
Transaction SPRO
> Cross-Application-Component
    > Document Management
         > Control Data
             > Define screen for object links
If you need the dynpro number or object you will find all standard SAP
objects and their screen number in function module CV130 (Screens) by
transaction SE80. Please maintain all necessary SAP objects.
2. If I create a DIR in CV01N, I like to type the value in Object link EKKO (Purchase Order) manual and the system has to take the value LFA1 (Vendor) automatic from the Puchase Order.
How can I solve this request?
Here I think that the BADI DOCUMENT_OBJ could be useful for you to control the creation of object links from CV01N or CV02N transaction.
Best regards,
Christoph