Message type: E = Error
Message class:  J_3RF_DDX - Message class for digital documents exchange 
Message number: 201
Message text: Invoice is not found in Journal
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 "J_3RF_DDX201 Invoice is not found in Journal" typically occurs in the context of the SAP system when dealing with the Russian localization for tax reporting and invoicing. This error indicates that the system is unable to find a specific invoice in the journal entries, which can prevent further processing of financial documents. Causes: Missing Invoice Entry: The invoice may not have been created or posted correctly in the system. Incorrect Document Number: The document number being referenced may be incorrect or does not exist in the journal. Data Synchronization Issues: There may be a delay or issue with data synchronization between different modules or systems.
Configuration Issues: The system may not be configured correctly for the specific transaction or reporting requirements. Authorization Issues: The user may not have the necessary permissions to view or access the invoice in question. Solutions: Verify Invoice Creation: Check if the invoice has been created and posted correctly. You
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
J_3RF_DDX200 Unauthorized call of STORE_DOCUMENT
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
J_3RF_DDX116 Incoming confirmation of sending date was already processed for invoice
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
J_3RF_DDX202 Invoice already exists in Journal
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
J_3RF_DDX203 Update Journal fails
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.