BANK NIFTY WEEKLY OPTIONS

I am able to buy the BANK NIFTY WEEKLY CE OPTIONS but when I try and place a BUY order for the BANK NIFTY PE OPTIONS, the order is getting rejected and the following message is being displayed , “RMS RULE : OPTION STRIKE PRICE BASED ON LTP PERCENTAGE FOR ENTITY ACCOUNT ********* ACROSS EXCHANGE ACROSS SEGMENT ACROSS PRODUCT”

May I know what is the issue here??
Regards.

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