How To Fix CNV_PE_GEN201 - Generation requested with JOIN, but preselection table is not available

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_GEN - Messages for object generation

• Message number: 201

• Message text: Generation requested with JOIN, but preselection table is not available

What causes this issue?

The generation of the simple selection program and/or selection function
module was requested to be done including a JOIN of the preselection
table of the corresponding embedded specification position (linked to
the given area <ZH>&V1&</>).
The given area has <ZH>no</> link to an embedded specification, hence
the JOIN cannot be generated at all.

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?

This is information only.
The program/function module will be generated anyway based on the
currently available area configuration.

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 CNV_PE_GEN201 - Generation requested with JOIN, but preselection table is not available ?

  The SAP error message CNV_PE_GEN201 indicates that a generation process was requested with a JOIN operation, but the necessary preselection table is not available. This error typically occurs in the context of data migration or conversion processes, particularly when using SAP's Conversion Tools.
  Cause:
  
  Missing Preselection Table: The error arises when the system expects a preselection table to be available for the JOIN operation, but it cannot find it. This can happen if the preselection table was not created or if it was deleted or not properly configured.
  Configuration Issues: There may be issues with the configuration of the data migration project, such as incorrect settings or missing steps in the setup process.
  Data Model Changes: Changes in the underlying data model or schema may lead to the absence of the expected preselection table.
  
  Solution:
  
  Check Preselection Table: Verify if the required preselection table exists in the database. You can do this by checking the relevant database schema or using transaction codes like SE11 (Data Dictionary) to look for the table.
  Recreate Preselection Table: If the preselection table is missing, you may need to recreate it. This can often be done by re-running the relevant steps in the data migration or conversion process that generate the preselection table.
  Review Configuration: Go through the configuration settings of your data migration project to ensure that all necessary steps have been completed and that the settings are correct.
  Consult Documentation: Refer to the SAP documentation or guides related to the specific data migration tool you are using. There may be specific instructions or prerequisites that need to be followed.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as there may be bug fixes or improvements related to the conversion tools.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and others that may help in troubleshooting.
  SAP Notes: Search for SAP Notes related to the error message CNV_PE_GEN201 in the SAP Support Portal. There may be specific notes addressing this issue with additional guidance or fixes.
  Community Forums: Consider checking SAP Community forums or other user groups where similar issues may have been discussed. Other users may have encountered the same problem and can provide insights or solutions.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.