DSWP error in Solution manager

Dear Sir,

I solution manager during DSWP Support Package and Stack Inbox

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Maintenance Optimizer Maintenance Optimizer List

Change requests cannot be displayed or created, because the RFC connection has errors, or is not maintained.

Check whether the RFC connection to the Change Man agement system is under the key CHARM_DEST (APPLI field in the DESTINAT field), in the view BCOS_CUST. You need authorization for the cross-client view/table maintenance (S_TABU_DIS and S_TABU_CLI).

Check the RFC connection in the transaction SM59. If your SAP Solution Manager system is also your Change Manager system, the internal connection must be 'NONE'. You need authorization for the administration of RFC connections (S_RFC_ADM).

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How u solve this one

regards