Product Allocation : Product allocation check found changes to the confirmation

Issue :  Product allocation check found changes to the confirmation and the confirmation quantity is 'Zero'.

Solution : This issue occurs if a custom info structure is created with characteristics other than that of the standard product allocation structure S140. In such case, program User_Exit FV45VFZY, Include  USEREXIT_QUOTA_KEY_VALUE to pass custom characteristics from LIS to be filled and pass to internal LIS structure.

I have a Custom info structure created and notice from the above debug screen that the Material group and Material number fields are not filled. With appropriate code in place fill the custom fields to pass data to MCVBAP (LIS Item level info structure). The data from  these structures performs a check against the SXXX structure maintained for product allocation and confirms the quantities.