Yes.
Please read the article completely for better understanding.As per POSB CBS Manual Volume, writing of trans ID should be Red Ink on the upper right hand side corner of the Pay in Slip or withdrawal slip with Scheme Code.
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POSB (CBS) Manual Rule No.9 : Pay in Slip - Deposit Form
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SB7 Withdrawal Form - Using of Red ink on upper right hand side with Scheme Code
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Hence, the transaction ID should be written on SB7 form like shown below
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//copy//-POTOOLS