Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 056
Message text: Flag "Open item management" must be harmonized (in &1 cases)
The flag "Open item management" (field SKB1-XOPVW) must be harmonized.
Number of differences regarding this field: &V1&
Warning, with action required
For more information about how to handle the differences, see the
roadmap. An accelerator describes how to harmonize the different flags.
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.
The SAP error message CNV_20200_CHECK056 indicates that there is a discrepancy in the "Open item management" settings across different company codes or accounts in your SAP system. This error typically arises during data migration or system conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when the "Open item management" flag is not consistently set across the relevant accounts or company codes. This inconsistency can lead to issues in financial reporting and data integrity, as the system expects uniformity in how open items are managed.
Solution: To resolve this error, you need to harmonize the "Open item management" settings across the affected accounts or company codes. Here are the steps to do this: Identify Affected Accounts/Company Codes: Review the error message to identify the specific accounts or company codes that are causing the issue. Check Current Settings: Use transaction codes like OBY6 (for company code settings) or FS00
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