What causes this issue?

Table &V1& contains conflicting non-transparent fields. The
non-transparent fields of a given table are in conflict if (all
conditions must be fulfilled):
they are a part of the same transparent field,
one of them is defined to be a part of the other,
they are relevant for conversion.
Example 1:
Table X contains following conversion-relevant fields:
ABCD-COMP1
ABCD
The conflict occurs because the non-transparent field ABCD-COMP1 is
defined as a part of ABCD. This situation is dangerous because there is
a risk of converting the same data 2 times.
Example 2:
Table X contains following conversion-relevant fields:
DEFG-COMP1
DEFG-COMP2
The conflict doesn't occur because the non-transparent fields DEFG-COMP1
and DEFG-COMP2 are defined to be independent of each other. If they
hadn't been independent they whould have had to have a common part as in
example 1.
Example 3:
Table X contains following conversion-relevant fields:
HIJK-COMP1
HIJK-COMP1-COMP3
The conflict occurs because the non-transparent field HIJK-COMP1-COMP3
is defined to be a part of HIJK-COMP1 (analogous to example 1).

System Response

The status is set to 'Error'.

How to fix this error?

If table &V1& is an SAP standard table then contact SAP for support. If
it is your own table correct the settings in order to resolve the
conflicts.

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.