SAP Message >1001 - Changing key selection necessitates postprocessing

Diagnosis
You want to change your key field selection.

Procedure
Following a change to field selection, you should check the entries foraccount assignment. This is because changes to the key selection havethe following effect:

  • You add a key field

  • Existing entries contain the value * in the additional key fieldchosen. Check the entries that are contained in key field *. You cannotdifferentiate account assigment determination using the additional keyfield until you have made a specific entry in this field.
    • You deselect a key field

    • For those entries that now have the same key because a key field hasbeen deselected, the system uses the first entry. All other entrieswith the same key are deleted. Check the entries summarized in thisway, since it is not necessarily the case that the first entry shouldbe used. If necessary, change the values in the function fields.

      Example
      Key 1,,Key 2,,Key 3,,Function
      K11,,K12,,K13,,F100
      K11,,K12,,K14,,F101
      K22,,K23,,K24,,F200
      Key 3 is deleted, leading to only the first of those entriesthat are identical in key 1 and key 2 being transferred:
      Key 1,,Key 2,,Key 3,,Function
      K11,,K12,,F100
      K22,,K23,,F200
      Postprocessing is necessary if the function field for the keyK11 and K12 is F101 and not F100.