diff --git a/spec/diagrams/is001_regardApplicationCausesInquiringServiceRecords_problem1.plantuml b/spec/diagrams/is001_regardApplicationCausesInquiringServiceRecords_problem1.plantuml
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+@startuml is001_regardApplicationCausesInquiringServiceRecords_Problem1
+skinparam responseMessageBelowArrow true
+
+title
+is001_regardApplicationCausesInquiringServiceRecords_Problem1
+end title
+
+participant "EATL://v1/regard-application" as eatlRegardApplication
+participant "EATL://v1/update-operation-key" as eatlUpdateOperationKey
+
+participant "newApp://v1/redirect-service-request-information" as newAppRedirectSerReqInfo
+participant "newApp://v1/update-operation-key" as newAppUpdateOperationKey
+database "newApp:config.json" as newAppConfiguration
+
+participant "ALT://v1/add-operation-client-to-link" as altAddOperClient2Link
+participant "ALT://v1/update-ltp" as altUpdateLtp
+database "ALT:ElasticSearch" as altApplicationDataES
+
+participant "OKM://v1/regard-updated-link" as okmRegardUpdatedLink
+
+group Initial data
+    note over newAppConfiguration #LightBlue
+        version of EATL is 2.0.1
+        {
+        "application-name" : "ExecutionAndTraceLog",
+        <b>"release-number" : "2.0.1"
+        }
+    end note
+    note over altApplicationDataES #LightBlue
+        In the control-construct of the newApplication,
+        version of EATL is 2.0.1
+        {
+        "application-name" : "ExecutionAndTraceLog",
+        <b>"release-number" : "2.0.1"
+        }
+    end note
+end
+
+note over eatlRegardApplication
+    <b>Step 1
+    initiates link craetion for
+    "/v1/redirect-service-request-information"
+    in the serving application(NewApplication)
+    and the client application(ExecutionAndTraceLog)
+end note
+
+eatlRegardApplication -> altAddOperClient2Link : <b>Step 1
+
+note Right altAddOperClient2Link
+    <b>Step 2
+    notifies new link creation to OKM
+end note
+
+altAddOperClient2Link -> okmRegardUpdatedLink : <b>Step 2
+
+note over okmRegardUpdatedLink
+    <b>Step 3
+    OKM generates new operation-key and 
+    it will try to set the new <b>operation-key 
+    to the client application<b>(ExecutionAndTraceLog)
+    and the serving application<b>(NewApplication)
+end note
+
+okmRegardUpdatedLink -> newAppUpdateOperationKey : <b>Step 3.1
+okmRegardUpdatedLink -> eatlUpdateOperationKey : <b>Step 3.2
+eatlUpdateOperationKey -[#Grey]> eatlRegardApplication : Internally informs about the operation-key update
+
+note over eatlRegardApplication
+    <b>Step 4
+    After receiving an updated operation-key
+    for the operation-client
+    "/v1/redirect-service-request-information"
+    of the NewApplication , 
+    NewApp://v1/redirect-service-request-information
+    will be addressed
+end note
+
+eatlRegardApplication -> newAppRedirectSerReqInfo : <b>Step 4
+newAppRedirectSerReqInfo -> eatlRegardApplication : responseCode : 204
+
+group callback of "newApplicationname://v1/redirect-service-request-information"
+    newAppRedirectSerReqInfo --> newAppConfiguration
+    note over newAppConfiguration #LightBlue
+        version of EATL is 2.1.0
+        {
+        "application-name" : "ExecutionAndTraceLog",
+        <b>"release-number" : "2.1.0"
+        }
+    end note
+    newAppConfiguration --> altUpdateLtp
+    altUpdateLtp --> altApplicationDataES
+    note over altApplicationDataES #LightBlue
+        In the control-construct of the newApplication,
+        version of EATL is 2.1.0
+        {
+        "application-name" : "ExecutionAndTraceLog",
+        <b>"release-number" : "2.1.0"
+        }
+    end note
+end
+
+note over eatlRegardApplication
+    <b>Step 5
+    initiates link creation for 
+    "/v1/record-service-request"
+    in the serving application(ExecutionAndTraceLog)
+    and the client application(NewApplication)
+end note
+
+eatlRegardApplication -> altAddOperClient2Link : <b>Step 5
+
+note over altAddOperClient2Link #LightCoral
+    link creation will be successful
+    <b>Only if the 
+    <b>callback of "newApplicationName://v1/redirect-service-request-information"
+    <b>completed its job before this step.
+end note
+
+
+
+
+
+