Message type: E = Error
Message class:  CNV_20800 - Message class for CNV_20800 
Message number: 049
Message text: Parameter &1 was set to &2
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_20800049 typically indicates that a parameter in a conversion or migration process has been set to a specific value, which may not be appropriate for the current context or operation. This message is part of the SAP Conversion and Migration tools, often used during system upgrades or data migrations.
Cause: The error message is generated when a specific parameter (denoted as &1) is set to a value (&2) that is either invalid, not allowed, or not suitable for the current operation. This can occur due to: Incorrect Configuration: The parameter may have been configured incorrectly in the migration settings. Incompatibility: The value assigned to the parameter may not be compatible with the data or the process being executed. Missing Dependencies: Other required parameters or settings may not be properly configured, leading to this error.
Solution: To resolve this error, you can take the following steps: Check Parameter Settings: Review the configuration settings for the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_20800048 Contact Person &1, communication information updated (Address &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_20800047 Address not found for Customer number &, please check
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_20800050 Contact Person &1, communication information updated (HOME Address &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_20800064 &1: hidden field &2 contains value &4
What causes this issue?  During the conversion &V1& (account groups are given in brackets), the account group changes. Other than for the old ...
Click on this link to search all SAP messages.