How To Fix PN166 - Schema &1 does not have program class 'C'

SAP Error Message - Details

• Message type: E = Error

• Message class: PN -

• Message number: 166

• Message text: Schema &1 does not have program class 'C'

What causes this issue?

Schema &V1& has an incorrect program class.

System Response

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

How to fix this error?

Use the possible entries function to choose an allowed schema.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PN166 - Schema &1 does not have program class 'C' ?

  The SAP error message PN166 indicates that there is an issue with the schema in the context of payroll processing. Specifically, the error states that the schema specified (denoted by &1) does not have a program class 'C'. This typically occurs in the context of payroll schemas where the system expects a certain configuration that is not present.
  Cause:
  
  Missing Program Class: The schema defined in the payroll configuration is expected to have a program class 'C', which is typically used for certain types of payroll processing. If this class is missing, the system cannot execute the payroll process correctly.
  Incorrect Schema Configuration: The schema might be incorrectly configured or not properly assigned to the relevant payroll area or employee group.
  Custom Modifications: If there have been custom modifications or enhancements to the payroll schema, it might have inadvertently removed or altered the program class settings.
  
  Solution:
  
  
  Check Schema Configuration:
  
  Go to the transaction code PE01 (Schema Maintenance).
  Enter the schema name that is causing the error and check if the program class 'C' is defined.
  If it is missing, you may need to add it or correct the schema configuration.
  
  
  
  Review Payroll Area Settings:
  
  Ensure that the payroll area is correctly assigned to the schema and that all necessary configurations are in place.
  Check the settings in transaction PA03 (Maintain Payroll Areas) to ensure that the schema is linked correctly.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to payroll schema configuration to ensure that all necessary components are in place.
  
  
  
  Testing:
  
  After making changes, run a test payroll to ensure that the error is resolved and that the payroll process completes successfully.
  
  
  
  Consult with SAP Support:
  
  If the issue persists, consider reaching out to SAP support for further assistance, especially if there are custom developments involved.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  PE01: Schema Maintenance
  PA03: Maintain Payroll Areas
  PC00_MXX_CALC: Payroll Calculation (where MXX is the country code)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on payroll schema configuration.
  
  
  Documentation: Review the SAP Help Portal for detailed information on payroll schema configuration and program classes.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the PN166 error message in SAP.