Table Type &1 contains wrong or missing REFTYPE &2

What causes this issue?

Value &v2& is not allowed for the REFTYPE field of table type object
&v1&.

System Response

The system aborts the generation of the table type &v1&.

How to fix this error?

Correct the value of the REFTYPE field. With this field you specify the
row type as a reference. This field is optional.
The following values are possible:,,
,,No Information - means no reference type
<LB>A</>,,,,ANY
<LB>O</>,,,,Object
<LB>D</>,,,,DATA
<LB>B</>,,,,Built-In Dictionary Type
<LB>E</>,,,,Data Element
<LB>S</>,,,,Structured Type
<LB>L</>,,,,Table Type
<LB>C</>,,,,Class
<LB>I</>,,,,Interface

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.