https://devzone.nordicsemi.com/f/nordic-q-a/25355/multiple-manufacturer-specific-data-sectionsHi, In nRF5 SDK v14, in the file ble_advdata.h, there is a routine to create advertisement data from a ble_advdata_t struct that is passed. This struct allows only 1 manufacturer specific data section. I also noticed in the iOS API (and other implementationsen-USTelligent Community 13Thu, 21 Sep 2017 08:57:03 GMThttps://devzone.nordicsemi.com/thread/99925?ContentTypeID=1Thu, 21 Sep 2017 08:57:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9071504-e57f-4617-be4b-a7b99ae63438Thiemo van Engelen<p>At the moment we do not really need it, but I can imagine that a device wants to send Manufacturer specific data from multiple manufacturers (think iBeacon functionality but with less data) and when the data is short, both can be placed in one advertisement packet.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/99924?ContentTypeID=1Thu, 21 Sep 2017 08:33:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8e487793-92a4-4134-a4da-46dac126d722Petter Myhre<p>I couldn&#39;t find anything in the spec saying that you can only have one manufacturer specific data type.</p> <p>Could you explain a bit more about why you would have more than one?</p><div style="clear:both;"></div>