Message type: E = Error
Message class:  87 - Localization Croatia: Messages 
Message number: 618
Message text: This request already exists. Please, check your entry!
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 "87618: This request already exists. Please, check your entry!" typically occurs when you are trying to create a request (such as a transport request or a change request) that already exists in the system. This can happen in various contexts, such as when working with transport management, change management, or other areas where requests are tracked.
Cause: Duplicate Request: The most common cause is that a request with the same identifier or details already exists in the system. System Configuration: There may be a configuration issue or a bug in the system that is causing the system to incorrectly identify a request as a duplicate. User Error: The user may have inadvertently attempted to create a request that is identical to one that has already been submitted.
Solution: Check Existing Requests: Go to the relevant transaction (e.g., SE09 for transport requests) and check if the request you are trying to create already
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