Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 163
Message text: Participating company codes with same country key &1
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_20200_CHECK163 indicates that there are participating company codes in a conversion or migration process that share the same country key. This situation can lead to issues during data migration or conversion, as the system may not be able to distinguish between the company codes properly.
Cause: The error typically arises in scenarios where: Multiple company codes are defined in the same country, and they are being processed in a way that requires unique identification. The data migration or conversion process is attempting to consolidate or transform data from these company codes, but the system detects that they are not uniquely identifiable due to the same country key.
Solution: To resolve this error, you can take the following steps: Check Company Code Configuration: Review the configuration of the company codes involved. Ensure that each company code has a unique identifier and that they are set up correctly in the system. Modify the Migration/Conversion Logic: If you are
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_20200_CHECK162 Other company codes which have a participating CO area assigned:
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_20200_CHECK161 Same G/L account numbers used by different house bank account IDs
What causes this issue?  The same G/L account number is assigned to more than one house bank account ID in company codes that will be merged (see tabl...
CNV_20200_CHECK164 Company code &1 with CO-FI Real Time Variant &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_20200_CHECK165 G/L account &1 assigned to company code &2, House bank &3, Account ID &4
What causes this issue?  G/L account &V1& is assigned to several House bank account IDs. One of these house bank account IDs is: Company code:...
Click on this link to search all SAP messages.