2621246 - OBJECTS_NOT_FLAT dump in SPUM4

While running a Unicode conversion, SPUM4 fails with dump OBJECTS_NOT_FLAT for tables ended with '~' sign.

ABAP runtime errors OBJECTS_NOT_FLAT

Occurred on <date> at <time>
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The current statement is not supported for deep data objects.

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With the statement
"SELECT ... INTO wa"
deep data objects are not supported at the argument position "wa".
Deep data objects are internal tables or structures that contain
Elementary deep data types are inernal tables (object and data object)
references, and strings (STRING, XSTRING).
In general, a deep data object is an elementary deep data type or
a structure containing deep data objects.

In this case, the operand "wa" has the non-flat type "BADIIMPL_SORT~".

SAP NetWeaver Non-Unicode systems

UM4_PRE_MIG , CHECK_READ_FROM_TABLE, RSINCL00 , KBA , BC-I18-UNI , Unicode , BC-I18 , Internationalization (I18N) , Problem