Too many nodes: Whole subtree not expanded

What causes this issue?

Expanding the sub-tree results in too much data being transferred to the
front end. This can lead to a memory overload in the front end.

System Response

Expanding the subtree was terminated.

How to fix this error?

Expand the individual nodes. You can also expand the subtrees, provided
that the maximum number of nodes is not exceeded (usually 1000 nodes).
The large number of nodes can cause performance problems on the front
end. However, this also is largely dependent on the hardware
constellation for the front end.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.