DRF giving error 'enterprise search connector for object type material not available'

hi all,

I have been trying to replicate material master data to target system through DRF using tcode DRFOUT. But it is giving an error that 'enterprise search connector is not available' . I cannot understand why it needs to use enterprise search in data replication. MDG material and material connectors are active in ESH_COCKPIT.

Thanks in advance