diff --git a/src/lib/test-outbound/TestCaseRunner.js b/src/lib/test-outbound/TestCaseRunner.js
index 0bf1da94..8a76df80 100644
--- a/src/lib/test-outbound/TestCaseRunner.js
+++ b/src/lib/test-outbound/TestCaseRunner.js
@@ -40,12 +40,17 @@ const SKIP_EMPTY_EXECUTION_ORDER = false // skip testCases without executionOrde
 class TestCaseRunner {
   constructor (config, logger) {
     this.config = config
-    this.logger = logger || loggerFactory('TestCaseRunner')
+    this.logger = logger || loggerFactory({ context: 'TTK', system: 'TestCaseRunner' })
   }
 
+  static lib = inputTemplate => inputTemplate.test_cases.reduce((acc, testCase) =>
+    testCase.options?.lib ? testCase.requests.reduce((acc, request) => ({ ...acc, [`${testCase.id}.${request.id}`]: request }), acc) : acc
+  , {})
+
   async runAll ({
     processTestCase, inputTemplate, traceID, variableData, dfspId, globalConfig, metrics
   }) {
+    const lib = TestCaseRunner.lib(inputTemplate)
     const runOneTestCase = (testCase, index) => () => {
       globalConfig.totalProgress.testCasesProcessed++
       return processTestCase(
@@ -59,7 +64,8 @@ class TestCaseRunner {
         metrics,
         inputTemplate.name,
         inputTemplate.saveReport,
-        index
+        index,
+        lib
       )
     }
 
diff --git a/src/lib/test-outbound/outbound-initiator.js b/src/lib/test-outbound/outbound-initiator.js
index deb0411a..775d95f3 100644
--- a/src/lib/test-outbound/outbound-initiator.js
+++ b/src/lib/test-outbound/outbound-initiator.js
@@ -181,6 +181,7 @@ const OutboundSendLoop = async (inputTemplate, traceID, dfspId, iterations, metr
       const startedTimeStamp = new Date()
       // Deep copy the template
       const tmpTemplate = JSON.parse(JSON.stringify(inputTemplate))
+      const lib = TestCaseRunner.lib(tmpTemplate)
       // Execute all the test cases in the template
       for (const i in tmpTemplate.test_cases) {
         await processTestCase(
@@ -194,7 +195,8 @@ const OutboundSendLoop = async (inputTemplate, traceID, dfspId, iterations, metr
           metrics,
           tmpTemplate.name,
           tmpTemplate.saveReport,
-          i
+          i,
+          lib
         )
       }
       const completedTimeStamp = new Date()
@@ -254,7 +256,8 @@ const processTestCase = async (
   metrics,
   templateName,
   saveReport,
-  testCaseIndex
+  testCaseIndex,
+  lib
 ) => {
   const tracing = getTracing(traceID)
   const testCaseStartedTime = new Date()
@@ -264,6 +267,12 @@ const processTestCase = async (
   // Store the request ids into a new array
   const templateIDArr = []
   for (const i in testCase.requests) {
+    if (testCase.requests[i].call) {
+      testCase.requests[i] = _.merge(
+        structuredClone(requestsObj[testCase.requests[i].call] ?? lib[testCase.requests[i].call]),
+        testCase.requests[i]
+      )
+    }
     requestsObj[testCase.requests[i].id] = testCase.requests[i]
     templateIDArr.push(testCase.requests[i].id)
   }