3622862 - Error Message Delivery of item xx of document xx already completed. Message no. 06744. 

Error occurs when attempting to modify any field in a Purchase Order with fully posted Goods Receipt.
Error Message Delivery of item xx of document xx already completed.
Message no. 06744. 
OR 
Purchase Orders (POs) with posted Goods Receipt (GR) or Invoice Receipt (IR) remain modifiable in the current process.
Standard system behavior expects such POs to be restricted from further modifications once GR or IR is completed.

SAP S/4HANA Cloud Public Edition

1. Create a Purchase Order in the system.
2. Post the Goods Receipt and ensure that the "Delivery Completed" indicator is selected during the posting process.
3. Open the Purchase Order and attempt to modify a line item for which the "Delivery Completed" indicator has been set.
4. Save the Purchase Order and observe the system behavior. The outcome will vary depending on the system configuration for message type 06744.

Based on the system configuration in SSCUI 102364 – Attributes of Message Types, the system displays either an error message (E) or a warning message (W). 

Message type can be set to either Warning or Error as required. By default, the configuration is set to Warning.

Steps to Configure:

1. Open the "Manage Your Solution" app.
2. Search for SSCUI "102364" – Define Attributes of System Messages.
3. Select "Configure" option.
4. Locate the entry with Version = "00", Area = "06", and Message = "744" – Delivery of item & of document & already completed.
5. Change the message type to "E" (Error) or "W" (Warning) as required.

 Message no. 06744, Purchase Order, Delivery Completed  , KBA , MM-FIO-PUR-PO-2CL , Fiori UI for Purchase Orders (Public Cloud) , Problem