SEM-BCS_BWRFC destination

Hi experts,

Every time I execute UCWB, an error messages saying that

i. SEM-BCS_BWRFC destination SEM-BCS_BW does not exist.

ii. Communication error during RFC communication with SEM-BCS_BW

I did create a connection at SM59 but it is still not working. As there is no selection available for me to which infocube the connection should be made.

If reasons and steps can be given would be much appreciated! Thanks in advance

Regards,

Ivan