How To Fix IO405 - The character strings to be compared (&1 and &2) do not follow each other

IO405 - Overview

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 405

• Message text: The character strings to be compared (&1 and &2) do not follow each other

What causes this issue?

Program error

System Response

The system does not allow further processing.

How to fix this error?

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 IO405 - The character strings to be compared (&1 and &2) do not follow each other ?

  The SAP error message IO405 indicates that there is an issue with the character strings being compared in a certain operation, typically related to the order or sequence of the strings. This error often arises in the context of data processing, where the system expects certain strings to follow a specific order or format.
  
  Cause:
  The error message IO405 is triggered when the system encounters two character strings that do not follow the expected sequence. This can happen in various scenarios, such as:
  
  Data Entry Errors: Incorrect data input where the strings are not in the expected order.
  
  Configuration Issues: Misconfiguration in the system settings that define how strings should be compared or ordered.
  Programming Errors: Custom code or enhancements that do not handle string comparisons correctly.
  Data Integrity Issues: Problems with the underlying data, such as missing or corrupted entries.
  
  
  Solution:
  To resolve the IO405 error, you can take the following steps:
  
  
  Check Input Data: Review the character