Message type: E = Error
Message class:  9J1UFDI - Messages for Ukraine E-Invoices 
Message number: 187
Message text: Please select exactly one document
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.
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The SAP error message "9J1UFDI187 Please select exactly one document" typically indicates that the system expects the user to select a single document for processing, but either no document or multiple documents have been selected instead. This can occur in various SAP transactions where a specific document needs to be processed, such as in invoice processing, document management, or workflow scenarios.
Cause: Multiple Selections: The user may have selected more than one document when the system requires only one. No Selection: The user may not have selected any document at all. User Interface Issue: Sometimes, the user interface may not clearly indicate that only one document should be selected.
Solution: Select One Document: Ensure that you select exactly one document from the list. If you have multiple documents highlighted, deselect them and click on only one. Check Filters: If you are using filters to narrow down the list of documents, ensure that the filter settings are correct
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