How To Fix L1420 - For the following table entries, conversion problems occurred

L1420 - Overview

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 420

• Message text: For the following table entries, conversion problems occurred

What causes this issue?

The system could not convert the data records in the table shown

How to fix this error?

If this problem pertains to productive data, you need to break off at
this point, correct the cause of the error and start the program again.
If you cannot correct the problem immediately, you can continue with
the release change.
However, before you use the Warehouse Management component productively
in this client, you must be certain to correct the cause of the error.
Otherwise, irreparable data loss may occur.

System Response

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 L1420 - For the following table entries, conversion problems occurred ?

  The SAP error message L1420 typically indicates that there are conversion problems with certain table entries, often related to data types or formats that cannot be processed correctly. This error is commonly encountered in the context of logistics and inventory management, particularly when dealing with material master data, stock levels, or similar entries.
  
  Cause:
  
  Data Type Mismatch: The data being processed may not match the expected data type. For example, a numeric field may contain non-numeric characters.
  Invalid Format: The data may be in an incorrect format, such as date formats or currency formats that do not conform to the expected standards.
  Corrupted Data: There may be corrupted entries in the database that cannot be converted or processed.
  
  Configuration Issues: There may be issues with the configuration of the system that affect how data is interpreted or converted.
  
  
  Solution:
  
  Check Data Entries: Review the specific entries that are causing the error. Look for any anomalies in the