Message type: E = Error
Message class:  PTRA_DIALOGUE - HR TRAVEL: Messages for Trip Costs Dialog 
Message number: 018
Message text: No retroactive run: "Earliest master data change" < retro accounting date
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The SAP error message PTRA_DIALOGUE018, which states "No retroactive run: 'Earliest master data change' < retro accounting date," typically occurs in the context of payroll processing when there are changes to master data (such as employee information) that affect payroll calculations. This error indicates that there is an attempt to perform a retroactive payroll run, but the earliest change in the master data is earlier than the retroactive accounting date specified in the payroll run.
Cause: Master Data Changes: There have been changes to employee master data (e.g., salary changes, position changes, etc.) that are effective from a date earlier than the retroactive accounting date. Retroactive Accounting Date: The retroactive accounting date is set to a date that does not encompass the period of the master data changes. This means that the system cannot process the changes because they fall outside the specified retroactive period.
Solution: To resolve this error, you can take the following
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