Message type: E = Error
Message class:  CNV_CDOP_CA - CDOP Clearing Analysis 
Message number: 130
Message text: Enter at least one system with role S
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message CNV_CDOP_CA130 typically occurs during the execution of a conversion or migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system requires at least one source system to be defined with the role "S" (which usually stands for "Source") in the configuration.
Cause: The error is caused by the absence of a source system defined in the system landscape that has the required role. This can happen if: No source systems have been configured in the system landscape. The existing source systems do not have the appropriate role assigned. There may be a misconfiguration in the system settings.
Solution: To resolve the CNV_CDOP_CA130 error, follow these steps: Check System Configuration: Go to the transaction code SICF and check the configuration of your systems. Ensure that at least one system is defined as a source system with the role "S". Define Source System: If no source system is defined, you need
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_CDOP_CA129 Statistics collection is not active on the destination &1
What causes this issue?  You have chosen the destination &V1& as statistics system (role "S") in which the statistics collection is ...
CNV_CDOP_CA128 Invalid statistics system
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CDOP_CA131 Enter at least one system with role A
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CDOP_CA132 The destination for the control center is not valid (see long text)
What causes this issue?  In the project landscape you have entered a system with role 'C' (control center). However the RFC destination you ...
Click on this link to search all SAP messages.