Element: 'exclusion-list' only exists for ned-id: cisco-iosxr-cli-7.50

[vishavjeet Singh]

 <?if-ned-id cisco-iosxr-cli-7.50:cisco-iosxr-cli-7.50?>
<exclusion-list>
<vlan-ids>{$exclusion-vlan-ids},{$vlan-id}</vlan-ids>
</exclusion-list>
<?end?> 

[emailrajkishansingh]

l2vpn

ethernet ring g8032 ECR_Major

exclusion-list vlan-ids 50,2114,2115,2312,2310

above command is working in dry run and failing in commit for NED: cisco-iosxr-cli-7.50

error: 

External error in the NED implementation for device RPURNRJNPAR006: command: exclusion-list vlan-ids 50,2114,2115,2312,2310\r\n: ------------------------------------^\r\nsyntax error: unknown command [ ethernet ring g8032 ECR_Major / l2vpn / ]"

can somebody please help, thanks