I came across this error when I was working with a File to iDoc interface. This error can occur for iDoc sender of receiver if the business system is not configures properly.
You have to check the settings shown below if the error occurs..
1. Technical System in SLD
2. Business System in SLD
Logical system name should be correctly assigned!
3. Business System in ID
Go to Integration Directory>Your Business System>Communication component menu>Adapter specific identifiers.
Set the logical system name.
Correct settings in above three areas would solve the problem :)
Labels: busines system PI, iDoc error, PI error, PI help, PI problem, PI troubleshoot, Receiver service cannot be converted into an ALE logical system, SAP PI, SAP XI