Message type: E = Error
Message class:  VTX - Messages from tracking notification processing 
Message number: 836
Message text: Delivery date does not tally with the tracking data
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The SAP error message VTX836, which states "Delivery date does not tally with the tracking data," typically occurs in the context of logistics and transportation management within SAP systems, particularly when dealing with the integration of tracking data for deliveries.
Cause: This error usually arises due to discrepancies between the expected delivery date in the SAP system and the actual delivery date provided by the tracking data. Possible causes include: Incorrect Delivery Date: The delivery date entered in the SAP system does not match the date provided by the carrier or logistics provider. Tracking Data Issues: The tracking data received from the carrier may be outdated, incorrect, or not updated in the system.
Configuration Issues: There may be configuration issues in the SAP system related to how delivery dates and tracking data are processed. Time Zone Differences: Differences in time zones between the SAP system and the tracking data source can lead to mismatches in delivery
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