Open a document in the validation screen. For more information, see Opening a Document in Validation in the SAP GUI.

Select a PO item in the Item Data area and click the Check items button.

➣ The status of the PO item selected will be checked.

➣ The status identified will be displayed in the column S. For more information, see Validation: Status of PO Items.

Click the icon in a PO item in the column S.

➣ The dialog screen Messages will open.

➤ This is where the warning and error messages for the PO items are displayed.