AX 2012 R2 Delete All ax transactions

I am using SysDatabaseTransDelete class to delete all transaction in my company but when I open the class to start delete and confirm that I will delete all transactions found in my current company I am facing the following error:

SQL error description: [Microsoft][SQL Server Native Client 10.0][SQL Server]The operation failed because an index or statistics with name '[i100656_60001_8DF02328F815415AB0689471E6796F25] already exists on table 'tempdb.DBO.[t100656_8DF02328F815415AB0689471E6796F25]'.

After drop this index and open the class again another error appear with different temp table and another index.

I have now about 35 temp table with index need to be dropped.

Is that normal or it’s a bug in ax 2012 R2?

It’s an urgent issue because my customer wants to go live after the pilot test.