When creating new tables extension you need to have the permission set also,
else you get error.
If you have enabled Code Analysis, you are good to go,
cause you can see the problems in the VS code window.
Below permission xml file for reference,
MRS_NAVPermissionSets.xml
<PermissionSets>
<PermissionSet RoleID="MRS01" RoleName="MRS_NAV Permission">
<Permission>
<ObjectType>0</ObjectType>
<ObjectID>50000</ObjectID>
<ReadPermission>Yes</ReadPermission>
<InsertPermission>Yes</InsertPermission>
<ModifyPermission>Yes</ModifyPermission>
<DeletePermission>Yes</DeletePermission>
<ExecutePermission>Yes</ExecutePermission>
<SecurityFilter />
</Permission>
</PermissionSet>
</PermissionSets>
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