More than 16 tables cannot be processed here

What causes this issue?

You attempted to bring in more than 16 tables into the join definition.
This is currently not possible.

System Response

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

How to fix this error?

Check whether the combination of this data is not available in fewer
tables.
Take into account the possibility of database views or logical
databases.
Consider, where necessary, the creation of a database view for the
combination of several tables and use of this view in the ABAB Join.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.