Show navigationGeneral Guidance on MessagesCommunication of percentages Currency conversion in DSR and CDM Cardinality of the RightShareType element in MWN Date/time tags and Time Zone Designators (TZD) Dealing with uncommon use cases Field length and precision GDPR and UGC Invalid Messages Precision of numeric values in MWN Priorities for metadata items Scalability of UGC sales/usage reports Time stamp for data accuracy Version compatibility What can I do if I have data requirements not addressed by DDEX Which Release Profile for which ERN Version?