Group & already exists for table GLTPC

What causes this issue?

&V1& is a group for the old summary record table GLTPC, which was used
in Release 2.2.

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 you have already carried out the
<DS:SIMG.SIMG_CFMENUORK10KEW>conversions for groups</> required
following an upgrade to Release 3.0. If you have not yet done so, do
it as soon as possible.
Avoid creating groups of the same name for summary record table GLPCT
if groups already exist for the old table. Otherwise the new ones will
be overwritten when you convert the old ones.

Error message extract from SAP system. Copyright SAP SE.