When you use the Incremental
Update function on a cube, the cube should have a MOLAP NWAY. If the
cube is loaded from a fully summarized table, the Incremental Update
function is not allowed. The NO_NWAY option is also of importance.
When using PROC OLAP to add data the cube, you must have the NO_NWAY
option set to NO. If the NO_NWAY option is set to YES, it is assumed
that the cube does not have a MOLAP NWAY and adding data is not allowed.