# Max RF-data I can transmit using XBee 868 LP API mode - Digimesh

**URL:** <https://forums.digi.com/t/max-rf-data-i-can-transmit-using-xbee-868-lp-api-mode-digimesh/19702>\
**Category:** XBee - DigiMesh\
**Tags:** api-mode, payload, 868lp, xbee\
**Created:** [July 10, 2018, 8:29am UTC](https://forums.digi.com/t/max-rf-data-i-can-transmit-using-xbee-868-lp-api-mode-digimesh/19702 "2018-07-10T08:29:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fredpeer](https://avatars.discourse-cdn.com/v4/letter/f/f17d59/32.png) [@fredpeer](https://forums.digi.com/u/fredpeer)\
**Post date:** [July 10, 2018, 8:29am UTC](https://forums.digi.com/t/max-rf-data-i-can-transmit-using-xbee-868-lp-api-mode-digimesh/19702/1 "2018-07-10T08:29:02Z")

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The NP command in XCTU reports that the maximum payload size is 100 bytes for the XBee 868 LP.  
When in API mode, I can send a package with a max RF-data of 95 bytes, and I receive a “succes” message.  
When the RF-data is larger then 95 bytes, I don’t get any response back.

What does a payload exist of, what is a payload?  
Where in the documentation is stated what the maximum RF-data is that can be send?

When the XBee is in AT command mode I can send a much larger size RF-data (Tested 250 bytes, and is also ok). Is this packet split into smaller packets and re-assembled on the receiving side?