Enable possibility of creating pending locations

plugins/catalog-backend/src/ingestion/HigherOrderOperations.ts

@@ -79,7 +79,7 @@ export class HigherOrderOperations implements HigherOrderOperation {
 
     // Read the location fully, bailing on any errors
     const readerOutput = await this.locationReader.read(spec);
-    if (readerOutput.errors.length) {
+    if (!spec.pendingLocation && readerOutput.errors.length) {
       const item = readerOutput.errors[0];
       throw new InputError(
         `Failed to read location ${item.location.type}:${item.location.target}, ${item.error}`,

plugins/catalog/src/api/CatalogClient.ts

@@ -109,8 +109,12 @@ export class CatalogClient implements CatalogApi {
 
     const { location, entities } = await response.json();
 
-    if (!location || entities.length === 0)
-      throw new Error(`Location wasn't added: ${target}`);
+    if (!location) throw new Error(`Location wasn't added: ${target}`);
+
+    if (entities.length === 0)
+      throw new Error(
+        `Location was added but has no entities specified yet: ${target}`,
+      );
 
     return {
       location,