Technical name in SAP name space. Do not begin with a number

What causes this issue?

Technical names that begin with a number are reserved as a namespace for
SAP.
If you use a technical name in this way there is the danger that your
entry will be overwritten by a future delivery from SAP.

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?

You are strongly recommended to correct your entry and use a technical
name that does not begin with a number.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.