Missing data source while opening Word in PB50

Question

Dear all,
a customer reported an error in our HR system, where he's working on applications.
The customer wanted to send a letter to an applicant. For this we are using the Word interface (RTF), which opens MS Word and fills in the applicant's data to the mail merge.
For several letters a MS Word error occurs (german):
xyz... ist ein Seriendruck-Hauptdokument. Word konnte die Datenquelle C:\Temp\R3_HR_DATASOURCE.SAP nicht finden.
In English it may be something like this:
xyz...is a main document for mail merge. Word was not able to find data souce C:\Temp\R3_HR_DATASOURCE.SAP
When I click on "Options..." in this error window, I can choose an entry called "Daten/Steuersatzquelle entfernen", which means to remove connection to the data source. If I do so, Word opens correctly an the letter gets filled with data.
I was searching for an SAP note and threads within these forums, but I did not find anything.
Asking Google brought me to the MS support website, where this issue is mentioned (but without SAP). It was recommended to install Service Pack 3 for MS Word 2003, so I did, but nothing happened. Still the same problem.
When I open the letter via PBWW, everything works fine. Even the word interface test was successful (report SAPRDEMOWORD97INTEGRATION).
As I learned from another posting on the MS support website, it may be possible that macro security is set too high in MS Word. So I decreased it to "medium", but that did not help, too.
Does anybody have an idea about this issue?

Answer 1

Hi Tobias,
I only found an error message when executing the method container_control->open_document
But it isn't clear what causes the error message.
In the open_document there are 2 possibilities . With us H_CONTROL and USER_INFO is always empty. and open_mode = -2, storage_mode = 513
Has it something to do with this ? 
IF NOT H_CONTROL IS INITIAL.
    IF USER_INFO IS INITIAL.
      CALL METHOD ME->CALL_METHOD
         EXPORTING
            METHOD            = 'OpenDocument'
            P_COUNT           = 5
            P1                = DOCUMENT_TYPE
            P2                = DOCUMENT_FORMAT
            P3                = DOCUMENT_URL
            P4                = OPEN_MODE
            P5                = STORAGE_MODE
            QUEUE_ONLY          = ' '
         IMPORTING
            RESULT            = DOCUMENT_COOKIE.
    ELSE.
      CALL METHOD ME->CALL_METHOD           : This is never executed with us
         EXPORTING
            METHOD            = 'OpenDocument2'
            P_COUNT           = 10
            P1                = DOCUMENT_TYPE
            P2                = DOCUMENT_FORMAT
            P3                = DOCUMENT_URL
            P4                = OPEN_MODE
            P5                = STORAGE_MODE
            P6                = USER_INFO-USER
            P7                = USER_INFO-PASSWORD
            P8                = USER_INFO-PROXY
            P9                = USER_INFO-PROXYUSER
            P10               = USER_INFO-PROXYPASSWORD
            QUEUE_ONLY          = ' '
         IMPORTING
            RESULT            = DOCUMENT_COOKIE.
    ENDIF.
So is it possible to give a little bit more information concerning how you solved the problem.
We already have contacted SAP and Microsoft but they had not a solution for us.
So I hope you can help us.
Kind regards
Pascale