A REST call for the workflow STOP node gives back 400 status code with system#invalidfetch message in the response.

Question & Answer

Question

Why does a REST POST call made to the STOP workflow Node returns with "system#invalidfetch" error and statusCode 400?

Steps followed to get this error are as follows:

STEPS TO REPRODUCE:

(A) Pre-reqs: Prepare a workflow, then validate, enable, and activate it.
-Process Name: SR_WFLOW12; Object: SR; Save; Notice, 1 Start and 1 Stop node is already present
-Drag 1 Condition node; 1 Stop Node; 2 Task Nodes; 2 Input Nodes; 2 Interaction Nodes to the workflow designer canvas

-Perform following actions on each node:

1) START NODE
-Positive Line to a Condition

2) Condition Node
-Title-> REPORTED BY PRIORITY =4; Description-> REPORTED BY PRIORITY =4
-Expression-> :reportedpriority=4
-Positive Line to Task->TASK 5
-Negative Line to STOP1

3) STOPNODE
-Title->STOP1

4) Task Node
-Title-> TASK 5; Description-> TASK 5
-Application-> SR
-Under Assignments-> RoleID-> ORIGINATOR
-Perform Accept Action-> When any assignment is accepted
-Positive Line to Task->INPUT 7
-Negative Line to INTERACTION 9

5) Input Node
-Title-> INPUT 7; Description-> INPUT 7
-Positive Line to INPUT 8
-Positive Line to INTERACTION 9

6) Interaction Node
-Title-> INTERACTION 9
-Directions Title-> Primary interaction; Directions Body: Primary interaction
-Positive Line to INTERACTION 10

7) Interaction Node
-Title-> INTERACTION 10
-Directions Title-> Secondary interaction; Directions Body: Secondary interaction
-Positive Line to Task Node-TASK 6

8) Input Node
-Title-> INPUT 8; Description-> INPUT 8
-Positive Line to Task Node-TASK 6
-Positive Line to Stop Node - STOP2

9) Task Node
-Title-> TASK 6; Description-> TASK 6
-Application-> SR
-Under Assignments-> RoleID-> ORIGINATOR
-Perform Accept Action-> When any assignment is accepted
-Positive Line to Stop Node - STOP2

10) From More Actions; Add workflow to Application: SR

11) Create a Service Request; TEST1; Priority: 4; Take Ownership; Route the workflow to the TASK 5 node

(B) Perform REST Queries to see the issue.

(1) Make a REST GET Request

GET URL

http://localhost:9080/maximo/oslc/os/mxapiwfassignment?_lid=maxadmin&_lpwd=maxadmin&oslc.select=*&lean=1&oslc.where=ownertable="SR"&oslc.where=owner="maxadmin"

RESPONSE

Observe the workflow is at the TASK 5 node and it shows in the response 1 positive line to INPUT 7 Node and 1 negative line to INTERACTION 9 Node along with href link

{

    "member": [

        {

            "wfaction_collectionref": "http://localhost/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0/actions",

            "keeporigassgn": false,

            "wfassignmentid": 205,

            "roleid": "ORIGINATOR",

            "separategroups": true,

            "description": "TASK 5",

            "startdate": "2021-03-19T04:06:58-04:00",

            "assignstatus": "ACTIVE",

            "calendarbased": false,

            "assignstatus_description": null,

            "_rowstamp": "6176496",

            "wfaction": [

                {

                    "wfactionid": 766,

                    "_rowstamp": "6174926",

                    "ownernodeid": 5,

                    "localref": "http://localhost/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0/actions/0-766",

                    "membernodeid": 9,

                    "instruction": "INTERACTION 9",

                    "actionid": 6,

                    "href": "http://childkey#V0ZBU1NJR05NRU5UL1dGQUNUSU9OLzYvU1JfV0ZMT1cxMi8x",

                    "ispositive": false

                },

                {

                    "wfactionid": 765,

                    "_rowstamp": "6174925",

                    "ownernodeid": 5,

                    "localref": "http://localhost/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0/actions/1-765",

                    "membernodeid": 7,

                    "instruction": "INPUT 7",

                    "actionid": 5,

                    "href": "http://childkey#V0ZBU1NJR05NRU5UL1dGQUNUSU9OLzUvU1JfV0ZMT1cxMi8x",

                    "ispositive": true

                }

            ],

            "href": "http://localhost/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0",

            "nodeid": 5,

            "wfid": 284,

            "app": "SR",

            "origperson": "MAXADMIN",

            "processname": "SR_WFLOW12",

            "ownerid": 429,

            "ownertable": "SR",

            "templateid": "WFASSIGN",

            "timelimit": 0,

            "duedate": "2021-03-19T04:06:58-04:00",

            "assigncode": "MAXADMIN",

            "emailnotification": false,

            "assignid": 69,

            "processrev": 1

        }

    ],

    "href": "http://localhost/maximo/oslc/os/mxapiwfassignment",

    "responseInfo": {

        "href": "http://localhost/maximo/oslc/os/mxapiwfassignment?_lid=maxadmin&_lpwd=maxadmin&oslc.select=*&lean=1&oslc.where=ownertable=%22SR%22&oslc.where=owner=%22maxadmin%22"

    }

}

(2) Perform a POST call using the href link with action=wsmethod:completeAssignment 

POST

http://localhost:9080/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0?action=wsmethod:completeAssignment

    HEADERS

        x-method-override: PATCH

    BODY

        {

            "memo":"some memo",

            "accepted":true

        }

RESPONSE

Observe there are 2 actions shown here in the Response body, Both positive. 1 for INPUT 8 and another for INTERACTION 9.

And the response headers contain some parameters along with a url shown in the parameter called Location.

RESPONSE BODY

{

    "nodetype": "INPUT",

    "internalnodetype": "WFINPUT",

    "member": [

        {

            "wfactionid": 767,

            "sequence": 1,

            "ownernodeid": 7,

            "membernodeid": 8,

            "instruction": "INPUT 8",

            "processname": "SR_WFLOW12",

            "actionid": 7,

            "href": "null/0-767",

            "ispositive": true,

            "processrev": 1

        },

        {

            "wfactionid": 768,

            "sequence": 2,

            "ownernodeid": 7,

            "membernodeid": 9,

            "instruction": "INTERACTION 9",

            "processname": "SR_WFLOW12",

            "actionid": 8,

            "href": "null/1-768",

            "ispositive": true,

            "processrev": 1

        }

    ],

    "responseInfo": {

        "href": "http://localhost/maximo/oslc/os/mxapiwfassignment/_NjkvNS9TUl9XRkxPVzEyLzEvMjg0?action=wsmethod:completeAssignment",

        "totalCount": 2

    }

}

RESPONSE HEADERS

cache-control - >no-cache

content-language - >en-US

content-length - >595

content-type - >application/json

date - >Fri, 19 Mar 2021 08:10:39 GMT

location - >http://localhost/maximo/oslc/wf/mxapiwfassignment_71328

x-content-type-options - >nosniff

x-frame-options - >SAMEORIGIN

x-xss-protection - >1

(3) Perform a POST call using the LOCATION link returned earlier for the actionid: 7 which is for INPUT 8 Node

POST 

http://localhost:9080/maximo/oslc/wf/mxapiwfassignment_71328

    HEADERS

        x-method-override: PATCH

    BODY

        {

            "actionid": 7,

            "memo":"To INPUT 8 NODE"

        }

RESPONSE BODY

{

    "nodetype": "INPUT",

    "internalnodetype": "WFINPUT",

    "member": [

        {

            "wfactionid": 772,

            "sequence": 1,

            "ownernodeid": 8,

            "membernodeid": 6,

            "instruction": "TASK 6",

            "processname": "SR_WFLOW12",

            "actionid": 12,

            "href": "null/0-772",

            "ispositive": true,

            "processrev": 1

        },

        {

            "wfactionid": 773,

            "sequence": 2,

            "ownernodeid": 8,

            "membernodeid": 2,

            "instruction": "STOP 2",

            "processname": "SR_WFLOW12",

            "actionid": 13,

            "href": "null/1-773",

            "ispositive": true,

            "processrev": 1

        }

    ],

    "responseInfo": {

        "href": "http://localhost/maximo/oslc/wf/mxapiwfassignment_71328",

        "totalCount": 2

    }

}

RESPONSE HEADERS

cache-control - >no-cache

content-language - >en-US

content-length - >529

content-type - >application/json

date - >Fri, 19 Mar 2021 08:17:50 GMT

location - >http://localhost/maximo/oslc/wf/mxapiwfassignment_71328

x-content-type-options - >nosniff

x-frame-options - >SAMEORIGIN

x-xss-protection - >1

(4) Perform a POST call using the LOCATION link returned earlier for the actionid: 13 which is for STOP 2 node.

POST 

http://localhost:9080/maximo/oslc/wf/mxapiwfassignment_71328

    HEADERS

        x-method-override: PATCH

    BODY

        {

            "actionid": 13,

            "memo":"FROM NPUT 8 NODE to STOP 2 NODE"

        }

RESPONSE BODY

{

    "Error": {

        "reasonCode": null,

        "message": "system#invalidfetch",

        "statusCode": "400"

    }

}

RESULT: A message: "system#invalidfetch" with statusCode: "400" is received.

EXPECTED RESULT: REST POST call performed for the STOP Node should complete succesfully without any error.

Cause

An APAR is created to fix the code addressing this issue.

APAR Number: IJ33585

[{"Type":"MASTER","Line of Business":{"code":"LOB59","label":"Sustainability Software"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSLKT6","label":"IBM Maximo Asset Management"},"ARM Category":[{"code":"a8m0z000000GnTwAAK","label":"Workflow->General"}],"ARM Case Number":"TS005543421","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"7.6.0;7.6.1"}]

Product Synonym

Maximo Asset Management

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Document Information

Modified date:
05 July 2021

UID

ibm16469435

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