3395053 - 'Delete not permitted; confirmations already exist for input product ABC' Error While Removing Input Product From An Adjustment Confirmation

Errors are displayed while trying to remove Input Product ABC from Create Adjustment Confirmation for Production Lot AAA:

'Confirmation creation failed'
'Delete not permitted; confirmations already exist for input product ABC'

ABC means the Input Product ID.

AAA means the Production Lot ID.

SAP Business ByDesign 

production lot; input product; enable entry; remove; adjustment confirmation; task; confirmation , KBA , AP-PE-LOT , Production Lot , How To