Message type: E = Error
Message class:  CNV_10020 - Message class for package 10020 
Message number: 063
Message text: Conc./frag. objekt &1, table for fields not maintained
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_10020063 indicates that there is an issue with a specific object (referred to as &1 in the message) related to the conversion or fragmentation process, where the table for fields has not been maintained properly. This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools.
Cause: Missing Configuration: The error often occurs when the necessary configuration for the object in question has not been set up in the system. This could mean that the table or fields required for the conversion process are not defined or are incomplete. Data Model Changes: If there have been changes to the data model (e.g., changes in the structure of tables or fields), the corresponding configuration may not have been updated. Inconsistent Data: There may be inconsistencies in the data that are being migrated, leading to the inability to find the required fields or tables.
Solution: Check Configuration: Review
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_10020062 Conc./frag. objekt &1, table field &2: Offset/Length is too big
What causes this issue?  Table field &V2& has been stored for concatenated/ fragmented object &V1&. The length of this table field is ...
CNV_10020061 Determination object &1, domain &2: Lengths are not equal (&3 <> &4)
What causes this issue?  Domain &V2& has been stored for determination object &V1&. The system found that domain &V2& has leng...
CNV_10020064 Conc./frag. object &1, table/structure &2 for fields does not exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_10020065 Conc./frag. object &1, table field &2-&3 does not exist
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.