unable to receive message from Service bus queue (Session Enabled) in Logic apps

Amar-Azure-Practice 656

I have service bus Queue name('Claims') and session enabled on it, From Azure function we are inserting messages to the Queue('Claims') with session Id.

We have logic app application listening on the Queue with below configuration

Logic app is not picking up the messages from Queue name('Claims').

MayankBargali-MSFT 68,751 Reputation points

2020-09-28T04:48:32.637+00:00

@Amar-Azure-Practice I hope the answer helps. Please let me know if you any further queries.

1 answer

MayankBargali-MSFT 68,751 Reputation points

2020-09-23T15:37:23.497+00:00

@Amar-Azure-Practice If your sender application is sending the message to the queue (session enabled) using session ID then your receiver application will only be able to receive the message if the session ID is passed while making the receive call.

You need to pass your custom session ID (same when you are sending the message to queue) or next available session ID option in the Session id dropdown. In the below screenshot I have used the session as "Next Available".

Hope the issue resolved after updating the session ID from the drop down. If you are still facing the issue please share the exception message when you are running the trigger manually.

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1 person found this answer helpful.
Amar-Azure-Practice 656 Reputation points

2020-09-23T17:51:42.48+00:00

Hi Mayank,

Thanks a lot of quick response!!

I dont see much documentation about 'Next Available',
Already there are few messages in Queue with session id, In my Logic apps i dont know what is the Session Id.
If i use the 'Next Available' option does it read the first item from the Queue?

MayankBargali-MSFT 68,751 Reputation points

2020-09-24T01:57:41.457+00:00

@Amar-Azure-Practice You can refer to this document.

When you are selecting the 'Next Available' then the Service Bus connector can save up to 1,500 unique sessions at a time to the connector cache, per Service Bus messaging entity. If the session count exceeds this limit, old sessions are removed from the cache. Messages in the same session will have the order guarantee but if you have multiple sessions then the session id which is cached first the messages for that session ID retrives first.

Amar-Azure-Practice 656 Reputation points

2020-09-24T18:14:11.137+00:00

Hi Mayank,

I am calling child logic app from parent and passing Sessionid from parent to child.
Child Logic app will listen from Queue with the SessionId it received from the Parent Logic app

it is working fine, But when i am trying to convert the Payload receive from Service bus Queue to string using below expression in compose action

base64ToString(body('Get_messages_from_a_queue_(peek-lock)'))

Error

InvalidTemplate. Unable to process template language expressions in action 'ClaimData' inputs at line '1' and column '2147': 'The template language function 'base64ToString' expects its parameter to be a string. The provided value is of type 'Array'. Please see https://aka.ms/logicexpressions#base64ToString for usage details.'.

MayankBargali-MSFT 68,751 Reputation points

2020-09-25T05:12:01.843+00:00

@Amar-Azure-Practice I believe you have found the answer as I can see another post was created for this new issue but you have closed it as you have found the solution. As per the error message that it expects the parameter as string whereas you are providing the value in an array. Please let me know if you need any assistance with the initial issue.

Please 'Accept as answer' and ‘Upvote’ if it helped so that it can help others in the community looking for help on similar topics.
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