3779274 - Assignment field in customer line items is different from the billing document number

After posting an invoice, credit memo, debit memo, or other SD billing document, the Assignment field displayed in Manage Customer Line Items differs from the billing document number or the Reference field.

Examples:

• Assignment displays the original invoice number.
• Assignment differs from the billing document number.
• Assignment differs from the Reference field.

SAP S/4HANA Cloud Public Edition

Assignment, ZUONR, REBZG, REBZJ, REBZZ, Sort Key, Customer Line Items, Billing Document, Reference, Credit Memo, Invoice, ACDOCA, BSEG , KBA , FI-FIO-AP-TRA-2CL , Transaction Apps: Public Cloud , SD-BIL-IV-2CL , Processing Billing Documents (Public Cloud) , How To