How to "location: x" for and error message

Hi,

When a protocol fails PP often gives a location number for where the error occured, e.g

-> 'Subprotocol' ('New and Altered Cpds Fastlookup'); Location: 169 - error during Data Record Processing phase

Is there anyway I can search and find location: 169?

Unfortunetly this was running as a subprotocol in a parralel process so I can't easily locate the error.

Thanks

Joe