CA Service Management

good morning

How to use good morning I request your kind collaboration indicating if there is any document explaining how to use the PDM_IF AND PDM_ELSE or if there is any course in front of this option of modification of forms.

I specifically try to use these options for the CMDB attribute forms, where a conditional can hide me or show fields according to the CI class

Have you looked at the SDM documentation ? Has nearly everything you need for this:

HTMPL Tags - CA Service Management - 14.1 - CA Technologies Documentation 

adding to that, if you want to know what kind of variables in those PDM_IF/PDM_ELSE macros, you can take a look at

Server Variables - CA Service Management - 14.1 - CA Technologies Documentation