I have been working on Label Print in SAP ME through ADS services. When I use the default template provided by SAP ME, i could get the desired print. When using a template created by myself using Adobe Livecycle Designer, I could see the document which refers to this template doesnt work because, when this document name is given as user argument in the Print activity(SY521) in activity hooks tab of operation maintenance it throws an error "User argument TESTLABEL1 for activity SY521 is invalid".
If I am missing something please let me know.
Can you help me in understanding the difference between activities SY510, SY511, SY520, SY521 in SAP ME too.