Date change in Fixed-Term deposit offer-TMCB?

Hi experts,

I have an issue in TMCA where we create offer for Fixed deposit. There Start of term is to be mentioned for July month instead by mistake it is mentioned for June month, due to which interest which is calculated for the Principle amount manually and mentioned in TM02. There we need to change Effect from date for July month. Please suggest.

Thanks in advance

Sandeep