Message type: E = Error
Message class:  TU - Billing/Scheduling/Budget Billing 
Message number: 808
Message text: Contract &1, device &2, register &3: Implausible meter reading
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 TU808 indicates an "Implausible meter reading" for a specific contract, device, and register. This error typically arises in the context of utilities management, particularly in the handling of meter readings for electricity, gas, water, or other utility services.
Cause: The error message TU808 is triggered when the system detects that the meter reading entered is inconsistent or implausible based on predefined business rules or historical data. Common causes include: Reading Out of Range: The new reading is significantly higher or lower than the previous reading, suggesting a possible error in data entry. Negative Readings: A reading that is negative or zero when it should be positive. Reading Sequence: The new reading is earlier than the last recorded reading, which is not allowed. Data Entry Errors: Manual input errors, such as transposed digits or incorrect values. System Configuration: Incorrect configuration of the meter reading validation rules in the SAP system.
Solution: To resolve the TU808 error,
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
TU807 Extrapolation for contract &1 unsuccessful; move-out already entered.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
TU806 Extrapolation for contract &1 was successful
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
TU809 Contract &1, device &2, register &3: Implausible period consumption
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
TU810 Contract &1, device &2, register &3: Meter reading successfully entered
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.