Message is missing in SE91

Hello All,

I hope you are good.

I have a message class J_1IG_MSGS, where a message number is absent in it, but code is present for those missing messages, can we find any modification logs/ something to know why it was deleted?

Also, I need to find, which programs are using those missing messages?

I guess some note has been implemented to remove it.

Kindly let me know, if you have any idea about this.

Thanks.

Karthick.