Message type: E = Error
Message class: GL - FI-SL Rollup
Message number: 420
Message text: The sequence may overwrite values of other sequences
For each field movement defined in the rollup, a separate internal table
is generated in which the data is summarized and stored. If you use
several rollup sequences in a rollup with different field movements, it
is quite possible that a sequence will overwrite the values of a
sequence that has already been processed.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Please check whether the above situation can occur. If the quantities
created by the different sequences are out of sync, you can execute the
rollup. If a sequence could be overwritten, you should divide this
'critical' rollup into several individual rollups.
Error message extract from SAP system. Copyright SAP SE.
GL420
- The sequence may overwrite values of other sequences ?The SAP error message GL420, which states "The sequence may overwrite values of other sequences," typically occurs in the context of General Ledger (GL) accounting when there is an issue with the sequence numbers assigned to documents or postings. This error indicates that the system has detected a potential conflict where the sequence number being used could overwrite existing values from other sequences, leading to data integrity issues. Causes: Duplicate Sequence Numbers: The error often arises when there are duplicate sequence numbers in the same fiscal year or period, which can happen if the configuration for number ranges is not set up correctly. Incorrect Number Range Configuration: If the number range intervals for document types are overlapping or not properly defined, it can lead to conflicts. Posting in the Wrong Period: Attempting to post documents in a closed period or fiscal year can also trigger this error. Custom Development: If there are custom programs or
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