aliasing for accounting, where accounting real column names are the same as others, which is 0..n as opposed to previously real names and hardcoded search via those. Now we are using a look up table for the numbers mapping to look em up

common/build.rs

@@ -161,6 +161,12 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             ".komp_ac.table_definition.PostTableDefinitionRequest",
             "#[derive(serde::Serialize, serde::Deserialize)]",
         )
+        // Carried by the two requests that create columns, both of which are
+        // serialised, so it has to be serialisable with them.
+        .type_attribute(
+            ".komp_ac.table_definition.GeneratedColumnAlias",
+            "#[derive(serde::Serialize, serde::Deserialize)]",
+        )
         .type_attribute(
             ".komp_ac.table_definition.CreateInvoiceTemplateTableRequest",
             "#[derive(serde::Serialize, serde::Deserialize)]",