RFC Connection not working between ECC5 to ECC6 system

Hi all,

I have created RFC connection ( connection type is ABAP) in SM59 to connect my ECC 5 to ECC6 system for transfer data using ALE, i have given all the details in RCF connection and connection test is also working fine from ECC5 to ECC6 but when i distribute the model in BD64 it is showing me error "Model can not be distributed communication error, user name or password in not correct*" then i checked connection in SM59 and test the connection for authorization test here i am getting the same error but with same user id and password i can login into the ECC6 system.

here ECC 5 is my sending system and ECC 6 is receiving system, and connection is not working from ECC5 to ECC6 where as from ECC6 to ECC5 connevtion is fine

Please help in this Regard.

Thanks & Regards

Madhu