DDNTF_CONV_UC~" does not exist in the ABAP Dictionary

Hello Experts ,

We are migrating our ECC system from Oracle to HANA DB using DMO - during Post Processing phase we are getting the following error :

(screenshot attached)

4 ETG003 Table "DDNTF_CONV_UC~" does not exist in the ABAP Dictionary
4 ETG003 Table "DDNTF~" does not exist in the ABAP Dictionary
4 ETG003 Table "DDNTT_CONV_UC~" does not exist in the ABAP Dictionary
4 ETG003 Table "DDNTT~" does not exist in the ABAP Dictionary\

1.  Am not sure why Shadow tables are considered in this phase ?

2.  What steps i can follow to fix this error ?[I tried activating those using se14 but activation button is disabled].

3.  I have a option to ignore and move forward but am not sure about the side affects ?

• Source ECC6 Ehp5 702 on Oracle.
• Target  ECC6 Ehp7 740 on HANA.
• SUM SP12 PL02

Thanks

Dev