Re: LO_STRUCDESCR ?= cl_abap_structdescr=>DESCRIBE_BY_DATA( ) dumping ..

I guess the question is, what kind of data you put into it.

The name suggests that it is a table, but you try to get the descriptopn of it as a structure, this is supposed to dump.

If you want the description of it as a table use another class:

CL_ABAP_TABLEDESCR

but if the data you try to describe really is a structure then I suppose it's a bug.

In any case you shoudl cover this in a try/catch when it works

edit: if you only want general information you should use the class

CL_ABAP_DATADESCR, this is the super class of the CL_ABAP_ELEMDESCR, CL_ABAP_STRUCDESCR CL_ABAP_TABLEDESCR