Overflow: More than 99 phantom assemblies on level &1 of MatBOM for &2

What causes this issue?

The bill of material (BOM) for &V2& / &V3& / &V4& (material / plant /
usage / alternative) contains more than 99 phantom assemblies on at
least level &V1&.

System Response

The system cannot explode the BOM and processing is aborted.

How to fix this error?

To solve the problem, you should restructure the BOM in such a way so
that no more than 99 phantom assemblies exist on any one level.

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.