How To Fix BIL021 - Negative serial switching consumption in installation &1

SAP Error Message - Details

• Message type: E = Error

• Message class: BIL - General billing

• Message number: 021

• Message text: Negative serial switching consumption in installation &1

What causes this issue?

A negative serial switching consumption value was determined at
installation &v1& in the period from &v2& to &v3&.

System Response

The system cancels billing.

How to fix this error?

Check and correct the meter reading results for the installations
concerned.
Please note that all consumption values for secondary installations
where installation &v1& is defined as the <DS:DE.HIGHLEVINST>
higher-level installation</> are deducted from the consumption value for
installation &v1&.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BIL021 - Negative serial switching consumption in installation &1 ?

  The SAP error message BIL021, which states "Negative serial switching consumption in installation &1," typically occurs in the context of billing and consumption data for installations that use serial switching (i.e., where consumption is tracked by serial numbers). This error indicates that there is an inconsistency in the consumption data, specifically that the system has detected a negative consumption value, which is not valid.
  Cause:
  
  Incorrect Data Entry: There may have been an error in entering consumption data, leading to negative values.
  Data Migration Issues: If data was migrated from another system, it may not have been properly validated, resulting in negative consumption values.
  Incorrect Configuration: The configuration settings for serial number management or billing may not be set up correctly.
  Timing Issues: If consumption data is being processed out of sequence, it may lead to negative values being calculated.
  
  Solution:
  
  Check Consumption Data: Review the consumption data for the installation in question. Look for any entries that may have been incorrectly recorded or calculated.
  Correct Data Entry: If you find any incorrect entries, correct them to ensure that all consumption values are positive.
  Review Serial Number Management: Ensure that the serial number management settings are correctly configured in the system.
  Data Consistency Check: Run consistency checks on the data to identify any discrepancies that may need to be resolved.
  Consult Documentation: Refer to SAP documentation or notes related to billing and serial number management for any specific guidelines or patches that may address this issue.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE16 or SE11 to check the relevant database tables for consumption data.
  SAP Notes: Look for SAP Notes that may address this specific error message or provide guidance on handling negative consumption values.
  User Forums: Check SAP community forums or user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the BIL021 error and implement a solution to resolve it.