Subversion Repositories SmartDukaan

Last modification

• Rev 37617 2026-09-14 05:37:03
• Author: amit

• Log message:

  Undo an internal GRN so its invoice can be received again
  
  A receipt taken before the serials were split left stock that cannot be corrected in place: a
  serialised unit is held one to a row, so an invoice that should have created several rows created one,
  and the rows that are missing cannot be added without also unpicking the running figures the receipt
  moved. Reversing the receipt and taking it again through the same path is the only way to arrive at
  what the invoice actually says.
  
  The reversal removes what receiving created - the scans, the inventory units, the invoice items, the
  purchase and the supplier invoice - and gives back the two running figures it moved: the warehouse
  availability, and the quantity taken off the purchase order line. Both are worked out from the rows
  being deleted rather than recomputed, so whatever the receipt added is exactly what comes off. A
  purchase order the receipt closed is opened again. Availability is kept only as a running count with
  nothing to rebuild it from, which is why it is adjusted by what is known to have been added rather
  than by anything inferred.
  
  An invoice whose stock has moved since is refused, not worked around. A unit that has been scanned out
  or partly consumed is no longer the receipt's to remove, and deleting around it would leave the
  warehouse holding stock that no record explains. Each invoice is reversed on its own so one refusal
  leaves the rest untouched, and a dry run reports everything it would delete and every figure it would
  change without writing.
  
  Invoices are named explicitly rather than selected by date, so a reversal can only ever touch what it
  was given.