Message type: E = Error
Message class:  CNV20201 -  
Message number: 052
Message text: &1 &2 &3 &4: Lower limit < and upper limit > than all limits in NRIV!
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The SAP error message CNV20201052 typically relates to issues with number range intervals in the NRIV (Number Range Intervals) table. This error indicates that the specified lower limit and upper limit for a number range are not valid because they fall outside the defined limits in the NRIV table.
Cause: Invalid Number Range: The number range you are trying to use is not defined correctly in the NRIV table. This could be due to: The number range not being created. The number range being deleted or modified incorrectly. The specified limits being outside the range defined in NRIV. Data Migration or Conversion Issues: If you are performing data migration or conversion, the error may arise if the new data being introduced has number ranges that do not align with the existing configurations.
Solution: Check NRIV Table: Go to transaction SE11 (Data Dictionary) and check the NRIV table. Verify that the number range object you are working with has valid
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