Return order should contain original items only

[SAPSupport]

Requirement: Restrict the addition of new material line items in Return Sales Order that was created with reference to an existing original Invoice. Restrict the increase in quantity of the original items.

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[SAPSupport · Accepted solution]

It may be possible to create a extensibility implementation. For example, you could try creating two custom fields - YY1_ORIGINAL, YY1_ORIGINALQTY. Fill these fields either through the BAdI SD_SLS_DATA_TRANSFER_ITEM (Data Transfer for Sales Document Items) or BADI SD_SLS_MODIFY_ITEM~MODIFY_FIELDS depending on your specific business requirement. Then create a check and raise an error message in BADI - SD_SLS_CHECK_ITEM - checking for a qty change against yy1_original or a new item where YY1_ORIGINAL is not equal to X.