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deleteChatMessages ERR: InvalidParam

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Hey there,

it seems like something is wrong with method deleteChatMessages. I've tried everything. I Just receive Error: InvalidParam on deleteChatMessages err callback.

client.chat.getClanChatGroupInfo('103582791467388342', (err, response) => {
  console.log(JSON.stringify(response, null, 4));

  const { chat_group_id: groupId, default_chat_id: chatId } = response.chat_group_summary;

  client.chat.getChatMessageHistory(groupId, chatId, { maxCount: 9999 }, (err, response) => {
    // console.log(JSON.stringify(response, null, 4));

    const toDelete = response.messages.filter((x) => !x.deleted)
      .map((x) => ({
        server_timestamp: x.server_timestamp,
        ordinal: x.ordinal,

    const chunks = _.chunk(toDelete, 10);

    // chunks.forEach((chunk) => {
    client.chat.deleteChatMessages(groupId, chatId, chunks[0], (err) => {
      if (err) {
      } else {
    // });


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Posted (edited)

You mean an Array with just one Obj? Yes I've tried it.. Also "InvalidParam" error.

Example Array: [ { server_timestamp: 2020-08-13T01:21:28.000Z, ordinal: 0 } ]

Nevermind.. seems like a Steam issue... getChatMessageHistory adding empty messages between and when you try to delete this invisible steam messages, you will receive that error.

I just optimized the filter now: 

response.messages.filter((x) => !x.deleted && x.message !== '')
Edited by Gassi
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