Adaptive Card Conversation Limit Issue in Teams via Bot Framework Connector

Question

Adaptive Card Conversation Limit Issue in Teams via Bot Framework Connector

lakshmi 821

We are sending an adaptive card containing text blocks, column sets, and action sets via the bot framework. We are sending the adaptive card to the Teams channel. Below is an example of such an adaptive card.

User's image

In some cases, we wanted to send up to 50 conversations, adding them as a column set in the adaptive card, and sending it to the Teams channel using the bot framework connector client.

Also, we restrict the conversation count to 20900 in the code, we can still add over 30 conversations to the adaptive card, but Teams only displays 15 to 20 conversations once its send to the teams' channel.

Is there a character limit for sending adaptive cards via the bot connector client?

YutongTie-9091 54,021 Reputation points Moderator

2024-09-27T18:26:14.74+00:00

Thanks for reaching out to us! Since this issue is more related to Microsoft Teams Development, I will add the tag so that this issue will be aware of by right experts.

Regards,

Yutong
Nivedipa-MSFT 3,991 Reputation points Microsoft External Staff Moderator

2024-09-30T05:19:42.03+00:00

lakshmi - Thanks for reporting your issue. The bot message size limit is 40 KB. If the bot message size limit exceeds 40 KB, bot receives a 413 status code (RequestEntityTooLarge), which contains the error code MessageSizeTooBig. The bot message size limit includes the entire message payload encoded as UTF-16 and doesn't include Base64 encoded images. Ref Doc: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/format-your-bot-messages
We are still checking this with the engineering team to confirm this. We will let you know once we get any updates from them.
lakshmi 821 Reputation points

2024-12-04T03:46:11.35+00:00

@Nivedipa-MSFT, Is there any update for this question.

1 answer

Your answer

YutongTie-9091 54,021 Reputation points Moderator

2024-09-27T18:26:14.74+00:00

Thanks for reaching out to us! Since this issue is more related to Microsoft Teams Development, I will add the tag so that this issue will be aware of by right experts.

Regards,

Yutong
Nivedipa-MSFT 3,991 Reputation points Microsoft External Staff Moderator

2024-09-30T05:19:42.03+00:00

lakshmi - Thanks for reporting your issue. The bot message size limit is 40 KB. If the bot message size limit exceeds 40 KB, bot receives a 413 status code (RequestEntityTooLarge), which contains the error code MessageSizeTooBig. The bot message size limit includes the entire message payload encoded as UTF-16 and doesn't include Base64 encoded images. Ref Doc: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/format-your-bot-messages
We are still checking this with the engineering team to confirm this. We will let you know once we get any updates from them.
lakshmi 821 Reputation points

2024-12-04T03:46:11.35+00:00

@Nivedipa-MSFT, Is there any update for this question.

Answer 1

Nivedipa-MSFT 3,991 Microsoft External Staff Moderator

@lakshmi - The bot message size limit is 40 KB. If the bot message size limit exceeds 40 KB, bot receives a 413 status code (RequestEntityTooLarge), which contains the error code MessageSizeTooBig. The bot message size limit includes the entire message payload encoded as UTF-16 and doesn't include Base64 encoded images.
User's image

Ref Doc: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/how-to/format-your-bot-messages

lakshmi 821 Reputation points

2025-01-21T11:29:35.28+00:00

Do we have any specific character limit for the whole adaptive card, how much characters we can hold in the card. That would be easy for us to handle it

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Adaptive Card Conversation Limit Issue in Teams via Bot Framework Connector

1 answer

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