ZMA CTLR EXPERIENCED OPERROR AT FL230 WHEN DESCENDING TFC THROUGH OCCUPIED ALT.

Narrative

ACR Y WAS SOUTHWEST BOUND AT FL230. I HAD AN ACR X AT LBV AT FL240 READY TO DESCENT INTO TPA. I HEARD MY D-SIDE SAY THAT THEY WERE GETTING READY TO COMBINE THE SECTOR WHICH I HAVE NOT DONE YET ON MY OWN. I THEN HEARD HIM SAY SOMETHING THAT I THOUGHT WAS 'YOU SHOULD GET THE ACR X DOWN.' I DIDN'T WANT TO LEAVE A SITUATION FOR THE CTLR GETTING MY SECTOR SO I TURNED THE ACR Y TO THE WEST AND HAVE THE ACR X A DESCENT CLRNC THINKING THAT I HAD ENOUGH TIME. MY D-SIDE THEN SAW THE PROB AND SAID THAT I BETTER DO SOMETHING ELSE. I THEN EXPEDITED THE ACR X AND TURNED HIM TO THE SOUTH. I ASKED FOR A REPORT OUT OF FL220. I THINK THAT THE BIGGEST CAUSE OF THIS ERROR WAS MY LACK OF EXPERIENCE (1 WEEK CHECKED OUT AT THESE FIRST TWO SECTORS); AND THE FACT THAT I THOUGHT MY D-SIDE ADVISED ME TO DO IT. SUPPLEMENTAL INFO FROM ACN 693478: I WAS WORKING D67 POSITION. THE AREA SUPVR INSTRUCTED US TO COMBINE R67 WITH R46. I INITIATED HDOFS TO R46 POSITION. I UNPLUGGED FROM THE D67 POSITION TO TAKE STRIP HOLDERS TO THE A46 AREA. WHEN I RETURNED TO THE D67 POSITION THE R67 CTLR ISSUED A CLRNC TO ACR X TO DESCEND TO FL180. I IMMEDIATELY ADVISED THE R67 CTLR I DID NOT BELIEVE SEPARATION WOULD BE MAINTAINED AND ADVISED A FURTHER VECTOR. THE R67 CTLR IMMEDIATELY TURNED ACR X TO HDG 250 DEGS.