Selecting certain records in a logical file

Hi everyone
Before I forget - we are on V7r1

I have not come across this before, and my searches do not come up with a solution, so I am hoping someone knows about this situation, or can point me in the right direction
We have a file, that contains multiple records, and on the record is an error message of 50 characters
There can be MANY different values in this error message, but in one instance, I only want to process records that have one particular error message
How can I create a logical over the physical with a select, using, for example VALUES, if the value needs to be defined over more than 1 record
For example
A R FILERECR PFILE(PHYSICALF)
A K KEY1
A K KEY2
A S ERRMSG VALUES('This is just an example of w
A 'hat I mean')

Is this even possible to continue into the next line?

As always - any and all responses gratefully accepted
Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
'If you're going through hell, keep going.'
Winston Churchill