specifically need to ask for custom conversion rates

common/src/proto/komp_ac.accounting.rs

@@ -28,6 +28,13 @@ pub struct PostJournalRequest {
     /// the latest closed or approved accounting boundary for the profile.
     #[prost(string, tag = "7")]
     pub accounting_date: ::prost::alloc::string::String,
+    /// Convert this posting with the profile's own rate for the publication date
+    /// instead of the ECB reference rate. False, the default, always uses ECB, even
+    /// where a custom rate for that date exists. True requires one to have been
+    /// entered: a missing rate is refused rather than silently converted at the
+    /// official rate. Ignored when nothing needs converting.
+    #[prost(bool, tag = "8")]
+    pub use_custom_rate: bool,
 }
 #[derive(Clone, PartialEq, Eq, Hash, ::prost::Message)]
 pub struct JournalLineInput {

common/src/proto/komp_ac.ecb.rs

@@ -13,11 +13,15 @@ pub struct PreviewEcbConversionRequest {
     /// conversion_context: transaction, statement, or decisive date.
     #[prost(string, tag = "4")]
     pub anchor_date: ::prost::alloc::string::String,
-    /// Required. Profile whose custom exchange rate table is consulted before the
-    /// ECB observations, so the preview matches what posting into that profile
-    /// would do.
+    /// Required. Profile whose rates apply. Only consulted when use_custom_rate is
+    /// set, but always required so a preview names the books it describes.
     #[prost(string, tag = "5")]
     pub profile_name: ::prost::alloc::string::String,
+    /// Preview the profile's own rate for the publication date rather than the ECB
+    /// reference rate. Must match what the posting will ask for, or the preview
+    /// describes a conversion that will not happen.
+    #[prost(bool, tag = "6")]
+    pub use_custom_rate: bool,
 }
 /// The conversion and immutable local ECB observation that would be used now.
 /// No rounding is performed and no conversion evidence is persisted.