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

Note
titleNote
  • 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 ID
Paste in your operator account ID, according to the selected network type
See Hedera Default Backend Configuration.
Operator Key
Paste in your operator account private key, according to the selected network type.
Network Type

Select the network you are working on:

  • Mainnet
  • Previewnet
  • Testnet
Note
iconfalse
"Mainnet" uses real-world value. Please use "Previewnet" or "Testnet" for testing purposes.
Operation Type

Select an operation

for the topic

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

your own

a custom message to submit to the specified Topic ID.

Also accepts Hash Variable.

Require Submit Key

Check this option

to send message to

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.

Note
iconfalse

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

a

 Hash Variable.

Admin Key

Admin Key

Select

an admin for the

the admin that controls this 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 account'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

your own

new topic memo to replace old topic memo.

Also accepts Hash Variable.

Operation (

...

Delete Topic)

NameDescription

Topic ID

The unique ID of an existing topic to mark as deleted on the Hedera DLT.

Can use a Hash Variable.

Admin Key

Select

an admin for the

the admin that controls this 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 account's encrypted stored mnemonic phrase

    .Set as Private Topic

    Check this option to create a private topic.

    Note
    iconfalse
    "Submit Key" will be auto-generated for a private topic.
    Topic Memo

    Insert your own custom topic.

    Also accepts Hash Variable.

    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

    • Store Response To Workflow Variable

    Topic Current Sequence

    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 when Set as Private Topic is checked,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 

    Submit Message.

    To indicate the latest sequence number of messages on the topic.

    Topic Current Hash

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

    To indicate the

    hashed messages

    latest SHA-384 running hash of the topic.

    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.