What occurs when you execute transaction MB01 in SAP S/4HANA?

When you execute transaction MB01 in SAP S/4HANA, you are initiating a process for creating goods movements, specifically for the posting of goods receipts against purchase orders or for other inventory movements. If something goes wrong during this transaction, such as missing mandatory fields or data inconsistencies, the system is designed to provide feedback in the form of error messages. This is crucial for ensuring that users can understand and correct their input before proceeding, thereby maintaining data integrity and accuracy in inventory management processes.

When an error message is issued, it typically signifies that the transaction cannot be completed successfully unless the user addresses the underlying issues. This interactive feedback feature is an essential aspect of how the system guides users through the processes, allowing them to make necessary corrections or adjustments on the fly.