Message type: E = Error
Message class:  OIJ_IF - OIL TSW: Messages for TSW Interfaces Layer 
Message number: 005
Message text: Transport system &1 exists
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 OIJ_IF005, which states "Transport system &1 exists," typically occurs in the context of the SAP Oil and Gas (OIJ) module when there is an issue related to the configuration of transport systems in the system. This error indicates that the transport system you are trying to create or modify already exists in the system.
Cause: Duplicate Entry: The transport system you are trying to create has the same identifier as an existing transport system. Configuration Error: There may be a misconfiguration in the transport system settings or data entry. Data Consistency: The system may have inconsistencies in the transport system data, leading to this error.
Solution: Check Existing Transport Systems: Go to the relevant transaction (e.g., OIJ_TMS) to view the list of existing transport systems. Verify if the transport system you are trying to create already exists. Modify or Delete Existing Entry: If the transport system already exists and you need to make changes, consider modifying
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
OIJ_IF004 No Transportsystem has been specified.
What causes this issue?  No transport system has been specified for the nomination. This might be acceptable for a 'book' nomination which d...
OIJ_IF003 Other entries also exits for this selection criteria
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIJ_IF006 Transportsystem &1 can only be used for Booktransfers
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIJ_IF007 The Transportsys.-Loc. assignement &1 &2 has been marked for deletion
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.