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     BALTECH Docs | 
    C API for BALTECH SDK
   
    
   
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| #define BRP_Iso14b_ErrCollision BRP_ERR_STATUS(0x1400, 0x02) | 
More than one PICC answered in the same time slot and none of them could therefore be requested correctly.
The brp_Iso14b_Request() command needs to be called again, maybe with more time slots.