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How to validate the digital signature in PDF file while sending PDF file via email

Dear Sir,

How to validate the digital signature in PDF file. We have written the program which selects the PDF file from folder and sends the PDF file having digital signature. This digital signature form PDF file is corrupted while receiving the PDF file via email. We have used GUI Upload function with method CALL METHOD cl_gui_frontend_services=>directory_browse while uploading the file & function SO_NEW_DOCUMENT_ATT_SEND_API1 is used to send email. We have to send around 2000 TDS Certificates to vendor by email. we can send by SBWP - transaction code -> SAP Business Workplace one email at a time but there 2000 TDS certificates per quarter and it is difficult to send these TDS certificates one by one manually. We can record the BDC fro transaction code SBWP. Can we get any standard program to send PDF having Digital signature via email without tampering the digital signature.


Abhay Abhyankar

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