How did system accept the form if date was mentioned as 30.09.2014 as it means the financial year was more than 12 months.
You have two options:
1. File revised MGT 7 with new correct
2. File AOC 4 also with date as 30.09.2014 and attach a note that you were forced to mention date as 30.09.2014 because of inadvertent error made in filing MGT 7.
(this you can use as defence in case of scrutiny or inspection )
3. In case you really want to follow ,legal procedure , please follow Rule 10 of Companies (Registration offices and Fees ) Rules 2014.
Here make a letter to ROC, mentioning the error ( with copies of MGT 7 ) and request for permission to file revised MGT 7
ROC will verify and will allow filing of new MGT&
File revised MGT 7 with additional fees
ROC will ensure that old MGT is removed from the MCA portal
You will have to visit ROC and get this done. This is fool proof method, though it will cost you additional fees.
There is possbiility that ROC may ask you to get the offence ( mentionng wrong particulars) Hence it may be expensive.
So talk to ROC before making letter and take his views.
This procedure is applicable for all forms