To not use a matrix formula, you can create an auxiliary column in the "Master list" sheet to count the unique documents.
(I guess the values in your range from: to: are amounts).
Then on your sheet "Master list" put the following formula in I4 and the copies down.
<table style="font-family:Arial; font-size:12pt; border-style: groove ;border-color:#0000FF;background-color:#fffcf9; color:#000000; "><tr><td ><b>Master list</b></td></tr></table><table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:25.66px;" /><col style="width:54.18px;" /><col style="width:134.97px;" /><col style="width:102.65px;" /><col style="width:70.34px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >H</td><td >I</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td > </td><td style="background-color:#92d050; font-weight:bold; text-align:center; ">Entity</td><td style="background-color:#92d050; font-weight:bold; text-align:center; ">Purchasing Document</td><td style="background-color:#92d050; font-weight:bold; text-align:center; ">Net Order Value</td><td style="background-color:#92d050; font-weight:bold; text-align:center; ">Unique</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td > </td><td >Group A</td><td style="text-align:right; ">1300008266</td><td style="text-align:right; ">96.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008267</td><td style="text-align:right; ">84.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >6</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008267</td><td style="text-align:right; ">168.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >7</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008267</td><td style="text-align:right; ">165.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >8</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008267</td><td style="text-align:right; ">165.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >9</td><td > </td><td >Group C</td><td style="text-align:right; ">1300008268</td><td style="text-align:right; ">9,500.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >10</td><td > </td><td >Group D</td><td style="text-align:right; ">1300008269</td><td style="text-align:right; ">216.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >11</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008271</td><td style="text-align:right; ">360.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >12</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008271</td><td style="text-align:right; ">220.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >13</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008271</td><td style="text-align:right; ">280.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >14</td><td > </td><td >Group B</td><td style="text-align:right; ">1300008271</td><td style="text-align:right; ">360.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >15</td><td > </td><td >Group A</td><td style="text-align:right; ">1300008272</td><td style="text-align:right; ">171.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >16</td><td > </td><td >Group A</td><td style="text-align:right; ">1300008272</td><td style="text-align:right; ">80.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >17</td><td > </td><td >Group D</td><td style="text-align:right; ">1300008273</td><td style="text-align:right; ">294.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >18</td><td > </td><td >Group A</td><td style="text-align:right; ">4000000299</td><td style="text-align:right; ">1,665.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >19</td><td > </td><td >Group A</td><td style="text-align:right; ">4000000299</td><td style="text-align:right; ">1,665.00</td><td style="text-align:right; ">0</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >20</td><td > </td><td >Group B</td><td style="text-align:right; ">4000000300</td><td style="text-align:right; ">35,100.00</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >21</td><td > </td><td >Group D</td><td style="text-align:right; ">4000000301</td><td style="text-align:right; ">5,895.00</td><td style="text-align:right; ">1</td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b></b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >I4</td><td >=IF(COUNTIFS($B$4:B4,B4,$C$4:C4,C4)=1,1,0)</td></tr></table></td></tr></table> <br /><br />
<table style="font-family:Arial; font-size:12pt; border-style: groove ;border-color:#0000FF;background-color:#fffcf9; color:#000000; "><tr><td ><b>sheet DOA</b></td></tr></table><table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:38.02px;" /><col style="width:69.39px;" /><col style="width:84.59px;" /><col style="width:227.17px;" /><col style="width:140.67px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >D</td><td >E</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td > </td><td > </td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td > </td><td style="background-color:#ffc000; color:#333333; font-weight:bold; font-family:Verdana; font-size:9pt; ">Group A</td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; "> </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >6</td><td > </td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; ">PO Range</td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; ">PO Range</td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; ">No. of POs raised in calendar year</td><td style="background-color:#ffc000; color:#333333; font-family:Verdana; font-size:9pt; ">Sum of POs raised</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >7</td><td > </td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">0</td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">20,000</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">3</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">3,677.00</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >8</td><td > </td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">20,001</td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">250,000</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">0</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; "> </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >9</td><td > </td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">250,001</td><td style="color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">100,000,000</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">0</td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; "> </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >10</td><td > </td><td style="color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#ffff00; color:#333333; font-family:Verdana; font-size:9pt; "> </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >11</td><td > </td><td style="background-color:#d9d9d9; color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#d9d9d9; color:#333333; font-family:Verdana; font-size:9pt; "> </td><td style="background-color:#d9d9d9; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">0</td><td style="background-color:#d9d9d9; color:#333333; font-family:Verdana; font-size:9pt; text-align:right; ">-</td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b></b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >D7</td><td >=COUNTIFS('Master list'!$B$4:$B$21,B5,'Master list'!$H$4:$H$21,">="&$B7,'Master list'!$H$4:$H$21,"<="&$C7,'Master list'!$I$4:$I$21,1)</td></tr><tr><td >E7</td><td >=SUMIFS('Master list'!$H$4:$H$21,'Master list'!$B$4:$B$21,$B$5,'Master list'!$H$4:$H$21,">=" & $B7,'Master list'!$H$4:$H$21,"<="&C7)</td></tr></table></td></tr></table> <br /><br />