Message type: E = Error
Message class: IO - Plant Maintenance: Object List
Message number: 406
Message text: Character string &1 is a special direct successor of &2
Program error
The system does not allow further processing.
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.
IO406
- Character string &1 is a special direct successor of &2 ?The SAP error message IO406 indicates that there is an issue with the character string being processed in relation to a hierarchy or structure in the system. Specifically, it suggests that the character string (often a cost center, internal order, or similar entity) is being treated as a special direct successor of another entity, which may not be valid in the context of the operation being performed.
Cause: Hierarchy Structure Issues: The error often arises when there is a problem with the hierarchy structure in the system. For example, if you are trying to assign a cost center or internal order that is not correctly defined in the hierarchy. Data Integrity Issues: There may be inconsistencies in the data, such as missing or incorrect relationships between entities. Configuration Errors: Incorrect configuration settings in the controlling area or organizational structure can lead to this error.
Solution: Check Hierarchy Structure: Review the hierarchy structure in the system to
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IO405
The character strings to be compared (&1 and &2) do not follow each other
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IO407
Character string &1 is not a special successor of &2
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