Message type: E = Error
Message class:  OIJ_LDSCHED - TSW: Load/Discharge Scheduling Message Class 
Message number: 001
Message text: Tank & and Berth & has no connection
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_LDSCHED001 indicates that there is no connection between a tank and a berth in the context of logistics scheduling, particularly in the Oil and Gas industry. This error typically arises in the SAP Oil and Gas (OIJ) module when trying to schedule loading or unloading operations.
Cause:
Configuration Issues: The tank and berth may not be properly configured in the system. This could be due to missing or incorrect master data. Data Inconsistency: There may be inconsistencies in the data related to the tank and berth, such as incorrect assignments or missing connections. Authorization Issues: The user may not have the necessary permissions to access the relevant data or perform the required operations. System Errors: There could be a temporary system error or glitch that is preventing the connection from being recognized.
Solution: Check Master Data: Verify that both the tank and berth are correctly defined in the system. Ensure that the tank is assigned
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
OIJ_LDSCHED000 Tank & does not exist at location &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIJ_IP039 Systemerror during ticket validation in Function &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIJ_LDSCHED002 Berth & does not exist at location &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIJ_LDSCHED003 Material & 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...
Click on this link to search all SAP messages.