local.meta stanzas

[goelt2000]

What does is the logic behind below stanzas under

splunk/etc/apps/customappname/metadata/local.meta

[app/ui]

version=7.3.7

modtime=epoch time

[app/launcher]

version=7.3.7

modtime=epoch time

What is it referring to ? and I suppose these settings are app local only and will not be exported globally since there is no 

export=system here?

Thanks

[manjunathmeti]

These are app UI and launcher page permissions specific to the app where local.meta exists (customappname in this case). You don't need to export them globally.

If this reply helps you, an upvote/like would be appreciated.

[goelt2000]

Thanks. Sorry, not sure I understand.

Is there any documentation on the same?

The only documentation on meta files is 

https://docs.splunk.com/Documentation/Splunk/8.1.2/Admin/Defaultmetaconf

and it is not useful to understand anything on the meta files. For example: what permissions?

what is the syntax, etc. The documentation on other config files like app.conf is very extensive and clear. 

Can we remove local.meta files? etc..

[manjunathmeti]

Check this link for understanding attributes in metadata files:
https://dev.splunk.com/enterprise/docs/developapps/manageknowledge/setpermissionsforobjects/ 

If you are creating app from scratch then you should not include local.meta, all your apps objects permissions should be added in default.meta only.

local.meta file is created when you change permission on Splunk Search heads UI as mentioned in the below documentation.
https://docs.splunk.com/Documentation/Splunk/8.1.2/Knowledge/Manageknowledgeobjectpermissions

If this reply helps you, an upvote/like would be appreciated.