How to differentiate which is exporting and importing parameters when calling dynamically using CL_ABAP_OBJECTDESCR

Hello All,
First of all sorry for posting the question in general abap queries, since somehow I am not able to post in ABAP objects discussions.
My requirement is
Step 1 : To get table name as input and dynamically derive all fields which is going to be passed as parameters for a method
I did this using cl_abap_typedescr class
Step 2: Then Pass the values into the relevant fields using below code
ptab_line-name = 'DATA_TAB'.
ptab_line-kind =
cl_abap_objectdescr=>changing.
GET REFERENCE OF text_tab INTO
ptab_line-value.
INSERT ptab_line INTO TABLE ptab.
Step 3: Later I am calling dynamic class like
    CALL METHOD (class)=>(meth)
      PARAMETER-TABLE
        ptab
      EXCEPTION-TABLE
        etab.
I have read most of the post using Class cl_abap_typedescr=>describe_by_name to get parameter where I have to give correct parameter type.
But my issue is that I also need to know which fields are acting as importing , exporting and changing parameter.
Is there anyway to determine and pass method's paramter type as well ?
Thanks!
Regards,
Ramya

Might be I can use table view VSEOMEPARA

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Hi Tapojyoti,
>>1. Is it correct that "WSUS 3.0 API Samples and Tools" is not supported in WSUS 4.0?
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and Tools.
>>2. Is "WSUS 4.0 API Samples and Tools" available?
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>>3. Is there any alternative way in WSUS 4.0 to export and import XML file consisting "Computer Groups" and "Patch Approvals" configurations?
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Steven Lee
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How to differentiate which is exporting and importing parameters when calling dynamically using CL_ABAP_OBJECTDESCR

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