@Kiran Maruthi 

which scope is this? share with me and let me try in my instance

Also the table in legal scope is task extended?

Hi @Ankur Bawiskar 

I'm trying this in Legal Matter Management Scope where it is not working.

As you have mentioned I have tried in one new custom App, it is working fine. it is only not working in Legal Matter Management scope. 

@Kiran Maruthi 

Please raise a HI ticket.

@Dr Atul G- LNG @Ankur Bawiskar 

Thank you for prompt response, I have figured out an OOB acl on attachment table specifically on legal matter table, and since attachments from attachment variable will be stored as "ZZ_YYtableName" due to which OOB acl is failing as it is checking for "tableName".

We can do for HI ticket and ask to fix, or we can just have custom acl with expected condtion created bcus we can't change OOB acl bcus it will ditrub oob function, 

@Kiran Maruthi 

ACL creation won't lead to attachment deletion.

what's the ACL script doing?

Since this is OOB and if you are sure what's the fix then you can proceed.

If my response helped please mark it correct and close the thread so that it benefits future readers.