Message type: E = Error
Message class:  FIN_FO_SSCUI - Messages for SSCUIs 
Message number: 002
Message text: The entered Clearing Account (A/R) does not exist.
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 FIN_FO_SSCUI002 indicates that the system cannot find the specified Clearing Account for Accounts Receivable (A/R) during a financial transaction. This typically occurs when the clearing account has not been defined in the system or is incorrectly configured.
Cause: Missing Clearing Account: The clearing account for A/R has not been created in the system. Incorrect Configuration: The clearing account may be incorrectly configured or assigned to the wrong company code or business area. Data Entry Error: There may be a typographical error in the account number entered during the transaction. Authorization Issues: The user may not have the necessary permissions to access the clearing account.
Solution: Check Account Configuration: Navigate to the configuration settings for the clearing accounts in the SAP system. Ensure that the clearing account for A/R is defined and active. Use transaction code OB40 to check the clearing account settings. Create the Clearing Account: If the clearing account does not exist, create it using transaction code
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FIN_FO_SSCUI001 The entered Bank (G/L) Account 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...
FIN_FO_SSCUI000 G/L Account mask must consist of 10 characters. Please add '+' as prefix.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FIN_FO_SSCUI003 You cannot use account masking only ('+').
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FIN_FSSC_DOCSEARCH000 Invalid Business Partner Identification
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.