when i cancel the material doc in MIGO ,the system showing the error message "please enter the correct PO number",
and not able to cancel the material document.There is one tabstrip developed for Gate entry details in the MIGO screen
after the Gate entry details captured through one program,the weight of the material is capturing through some
customised program only the gate entry no. is entered and the weight is automatically updated in the ztable of sap through
background job running.
in some material documents this error coming and not able to cancel the material doc.generally this error is not happening
and system will allow to cancel the material document,without any error.