Copying SAP ALV layouts between clients.

When my colleague wanted to check some standard SAP reports, he got the following problem: the system had two different clients (mandants), one of them had the test data and in another one the ALV layouts were saved. You can create a transport request from ALV maintenance screen when in the list output, but for that, you had to have some data (this particular report stopped with an error message at the selection screen). It was known to him that ALV layouts can be transported with a separate program, RKKBALVI, but it seems that the program name indicated in the status line was a different one. After doing the usual trick with debugger (going to layout transport screen and entering /h to get into debugger), we could figure out that the report RKKBALVI actually calls the function module LT_VARIANTS_IMPORT_SELECTION, which can also be used separately. But best of all, we could notice in the debugger that the program name used for RKKBALVI was completely wrong! With the right program name, both ways (function module and SAP-supplied program) worked perfectly.