Maximum records in SAP function module table parameter

Question

What's the maximum number of records that can be passed to a function module via a table parameter?

Answer 1

I have never hit max in a function call. But have in other programs.

from sap it depends on the type of table.

The maximum memory that can be occupied by an internal table (including its internal administration) is 2 gigabytes. A more realistic figure is up to 500 megabytes. An additional restriction for hashed tables is that they may not contain more than 2 million entries.

Answer 2

While it will depend on the type of table. You will hit other walls like memory allocation and no roll memory. Since everything you're doing will be resident in a WA the primary concern will be memory. If you plan on running this in the background and not as a Dialog user, you will still have to be cognizant of how much memory and page swap space you're consuming.