Index _PK causing issues in TCs

Indexes being created with _PK, causing issues with Table Conversions, anyone faced this issue before

We were able to identify Indexes, causing issue running TC's using the below query

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select DISTINCT INDEX_NAME from SYS.ALL_IND_COLUMNS where TABLE_NAME in ( SELECT DISTINCT TABLE_NAME FROM SYS.ALL_IND_COLUMNS WHERE INDEX_NAME like '%_PK' AND INDEX_OWNER = 'CRPDTA') and INDEX_OWNER='CRPDTA';

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Normally these Indexes are not supposed to be there, as Indexes usually created within JDE have a numeric, creation eg. INDEX_0 or INDEX_1 and so forth.. for sample " F0022_0 "

not " F0022_PK "

We were then able to drop the Indexes using the below commands