Where used list for IDOC's and Segments

Hello,

I have a requirement where I need to change the database table's field length, example I have a database table ZMARA in which I need to change field ZMATNR from CHAR18 to CHAR30.

Now I want to see Where Used List such that it displays all the objects impacted by ZMARA-ZMATNR. I am able to achieve part of the requirement other than IDOC's, Segments etc. Mainly Interface Related.

Is there any way to get the IDOC's, Segments name that may impact because of changes to ZMARA-ZMATNR.