Message type: E = Error
Message class:  FKKBIX2 - Billing in Contract Accounts Receivable and Payable 
Message number: 089
Message text: No report name is assigned to schema &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 FKKBIX2089 indicates that there is no report name assigned to the specified schema in the context of the SAP system, particularly in the area of financial accounting or controlling. This error typically arises when trying to execute a report or transaction that requires a specific report name associated with a schema, but the system cannot find one.
Cause: Missing Report Assignment: The schema specified in the error does not have a report name assigned to it in the configuration.
Configuration Issues: There may be issues in the configuration settings related to the report or schema. Transport Issues: If the schema was transported from another system, the report assignment may not have been included in the transport request. Authorization Issues: The user may not have the necessary authorizations to access the report or schema.
Solution: Check Schema Configuration: Go to the configuration settings for the schema in question. This can typically be found in the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FKKBIX2088 Please import a source first.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBIX2087 Log &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBIX2090 ALV expert mode &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBIX2091 *************** START OF FILE UPLOAD ******************
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.