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Introduction

This process tool plugin allows you to create/update/delete topics, and submit messages to topics on the Hedera DLT.
See Hedera Consensus Service for more info.

Note

  • Do ensure that the admin account has sufficient balance for the required transaction fee to create topics and send messages to a topic.
  • To update or delete a topic, an Admin Key must be specified during the creation of the topic.

Plugin Properties

Configure Hedera Topic Management Tool

NameDescription
Operator IDSee Hedera Default Backend Configuration.
Operator Key
Network Type
Operation Type

Select an operation type to perform:

  • Submit Message
  • Create Topic
  • Update Topic
  • Delete Topic

Operation (Submit Message)

NameDescription
Topic ID

The unique ID of an existing topic on the Hedera DLT.

Can use a Hash Variable that points to a topic ID.

Message

Insert a custom message to submit to the Topic ID specified.

Also accepts Hash Variable.

Require Submit Key

Check this option if you are interacting with a private topic.

Submit Key

This property will only appear when Require Submit Key is checked.

Only accepts Hash Variable that points to the topic's submit key.

Operation (Create Topic)

NameDescription
Admin Key

Select an admin to allow update and deletion of topics:

  • Disabled
  • Operator
  • Custom
Admin Account Mnemonic Phrase 

This property will only appear when Admin Key is Custom.

Only accepts Hash Variable that points to the admin account's encrypted stored mnemonic phrase.

Set as Private Topic

Check this option to create a private topic.

By enabling private topic, a submit key will be auto-generated.
To submit any messages to private topics, it requires this submit key.

Topic Memo

Insert a custom topic memo.

Also accepts Hash Variable.

Operation (Update Topic)

NameDescription
Topic ID

The unique ID of an existing topic on the Hedera DLT.

Can use Hash Variable.

Admin Key

Select new admin for the topic:

  • Operator
  • Custom
Admin Account Mnemonic Phrase 

This property will only appear when Admin Key is Custom.

Only accepts Hash Variable that points to the admin account's encrypted stored mnemonic phrase.

Modify Admin Key

Select option to modify Admin Key:

  • No Change
  • Remove
  • Replace to Operator
  • Replace to Custom
New Admin Account Mnemonic Phrase 

This property will only appear when Admin Key is Replace to Custom.

Only accepts Hash Variable that points to the new admin's encrypted stored mnemonic phrase.

Modify Submit Key

Select option to modify Admin Key:

  • No Change
  • Remove
  • Replace
Modify Topic Memo

Select option to modify Admin Key:

  • No Change
  • Remove
  • Replace
New Topic Memo

This property will only appear when Modify Topic Memo is Replace.

Insert new topic to replace old topic.

Also accepts Hash Variable that points to a stored topic.


Operation (Delete Topic)

NameDescription

Topic ID

The unique ID of an existing topic on the Hedera DLT.

Can use a Hash Variable.

Admin Key

Select an admin for the topic:

  • Disabled
  • Operator
  • Custom
Admin Account Mnemonic Phrase 

This property will only appear when Admin Key is Custom.

Only accepts Hash Variable that points to the admin's encrypted stored mnemonic phrase.

Store Response To Workflow Variable

Name

Description

Topic ID

This property will only appear when Operation Type is Create Topic.

To store the topic ID of the created topic.

Submit Key

This property will only appear when Operation Type is Create Topic and Update Topic when Modify Submit Key is Remove or Replace.

To store the Submit Key created for a private topic.

Topic Current Sequence

This property will only appear when Operation Type is Submit  Message.

To indicate the sequence of messages.

Topic Current Hash

This property will only appear when Operation Type is Submit Message.

To indicate the hashed messages.

Is Transaction Validated

To indicate if this transaction has been successfully validated.

Consensus TimestampTo store the timestamp of when the majority of the network members received the transaction. At this point, the transaction becomes final and verifiable.
Transaction IDTo store the transaction ID of the transaction performed.
Transaction Explorer URLTo store an auto-generated URL to see transaction details on a public ledger explorer. Default is Hashscan.




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