Verify the SAP ME user and pwd

Hi,

We have a requirement that we cannot use the POD as a client to do the operations, therefore we need a customized client connecting to SAP ME system. We have the problems that how to implement the user authentication from this customized client. We checked all the possible PAPPI, it seems nothing is with the user/password verification.

Could you please give me any guides how to implement this? The logic can be similar as the POD login.

Thanks & regards,

Leon