diff --git a/ccm-apiclient-commons/src/main/typescript/ccm-apiclient-commons.ts b/ccm-apiclient-commons/src/main/typescript/ccm-apiclient-commons.ts
index 19392cc08..1a89e7689 100644
--- a/ccm-apiclient-commons/src/main/typescript/ccm-apiclient-commons.ts
+++ b/ccm-apiclient-commons/src/main/typescript/ccm-apiclient-commons.ts
@@ -22,7 +22,9 @@ export { LibreCcmApiClient, ApiResponse, ApiError, buildUrl };
  */
 export function buildEmbeddedApiClient(): LibreCcmApiClient {
     if (!isFetchAvailable()) {
-        throw "Fetch API is not available. Please use buildIsomorpicApiClient.";
+        throw new Error(
+            "Fetch API is not available. Please use buildIsomorpicApiClient."
+        );
     }
     const baseUrl = new URL(document.documentURI);
     baseUrl.hash = "";
@@ -48,7 +50,9 @@ export function buildRemoteApiClient(
     jwt: string
 ): LibreCcmApiClient {
     if (!isFetchAvailable()) {
-        throw "Fetch API is not available. Please use buildIsomorpicApiClient.";
+        throw new Error(
+            "Fetch API is not available. Please use buildIsomorpicApiClient."
+        );
     }
 
     return new ApiClientFetchImpl(baseUrl, {
@@ -118,8 +122,16 @@ export function assertProperties(
 ): void {
     const missing = findMissingProperties(record, properties);
     if (missing.length > 0) {
-        throw `record is missing the following required properties:
-         ${missing.join(",")}`;
+        throw new MissingPropertiesError(missing);
+    }
+}
+
+export class MissingPropertiesError extends Error {
+    constructor(missingProperties: string[]) {
+        super(`record is missing the following required properties:
+        ${missingProperties.join(",")}`);
+
+        this.name = "MissingPropertiesError";
     }
 }
 
@@ -141,11 +153,11 @@ export function findMissingProperties(
 }
 
 /**
- * Builds an identifier parameter from the the provided parameter. If the 
+ * Builds an identifier parameter from the the provided parameter. If the
  * parameter is a number it is converted to a string and prefixed with `ID-`.
  * If the parameter matches the regex for a UUID, the identifier is prefixed
  * with `UUID-`. Otherwise the identifier is returned as it is.
- * 
+ *
  * @param identifier The identifier to process.
  */
 export function buildIdentifierParam(identifier: string | number): string {