Is there a limitation of the number of nodes created with RS_TREE...-FMs ?

Dear fellow developers,

some of our reports use the RS_TREE - function modules.

Recently one of those reports suffered a short dump in

background processing with error SYSTEM_IMODE_TOO_LARGE

(See SAP-Note 548845 = an internal modes size limit of

2 GB had been exceeded, probably resulting from too big

programs, internal tables, too many objects instantiated

etc.).

Since the RS_TREE-FMs are obviously creating objects

for each node internally and the active process during

the short dump was RS_TREE_SORT_CHILDREN I would be

interested in any feedback to the question if there is

some kind of limitation to the number of nodes I can

handle with those FMs. And if so, can I avoid the problem?

Thanks in advance for your appreciated input

Andreas