We also get that error message when going into history.  Click "OK", then hit the history button again.  It will let you in.

Have you set up reps for the Contact Manager in SM-I-I?

I am still having the below problem with AR history notes:
 
I need to add more notes to a customers account.  I have run out of space on the notes tab and went into history to add notes there and I get the following error:  
 
No record in AM-L-I of the rep assigned to this account  
You are not authorized to view this account(eventhough I have the rights).  
 
I do not get this error with every customer, only some.  Also, all reps are set up.
 
Any additional thoughts? Thanks.

Lynn,  
 
They are all set to Y.  Any other thoughts? Thanks.