3719639 - eInvoicing Belgium error: "[BR-CL-23]-Unit code MUST be coded according to the UN/ECE Recommendation 20 with Rec 21 extension" during submission in SAP S/4HANA Cloud Public edition

During eInvoice submission in Belgium DRC, the error '[BR-CL-23]-Unit code MUST be coded according to the UN/ECE Recommendation 20 with Rec 21 extension' is raised in the eDocument Cockpit. 

• SAP S/4HANA Cloud Public Edition
• SAP Document and Reporting Compliance, Cloud Edition

EDOC_COCKPIT, DRC, eInvocing, Belgium, Document and Reporting Compliance, SAP S/4HANA Cloud Public edition, eDocument, Value Mapping, Manage Electronic Documents, Peppol, namespace, /EDUBL, source document, eDocument Cockpit, submission, Schematron Validation, UNIT_OF_MEASURE_CODE, BR-CL-23, Electronic Document Processing, UN/ECE Recommendation, BUn (Base Unit of Measure), External Value. , KBA , CA-GTF-CSC-EDO-BE , Belgium , CA-GTF-CSC-EDO , Electronic Document Processing Framework , CA-GTF-CSC-EDO-PAP , Document Compliance Peppol Exchange Service , Problem