diff --git a/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-tracker.csv b/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-tracker.csv
index de24f11f..c4e7d5f6 100644
--- a/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-tracker.csv
+++ b/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-tracker.csv
@@ -2,7 +2,6 @@ serial_number
 5A23002711
 5A27000730
 5A27000909
-5A27001537
 5A27001802
 5A28000016
 5A28000063
diff --git a/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-usage-data.csv b/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-usage-data.csv
index 035c92e8..ad66945b 100644
--- a/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-usage-data.csv
+++ b/team-ONEBILLION/tablet-tracker/serial-numbers-not-found-in-tablet-usage-data.csv
@@ -1,5 +1,4 @@
 serial_number
-5427001537
 5A21000530
 5A22000952
 5A23001240
diff --git a/team-ONEBILLION/tablet-tracker/tablet-tracker-ONEBILLION.csv b/team-ONEBILLION/tablet-tracker/tablet-tracker-ONEBILLION.csv
index 2d7fa5f6..35559b0e 100644
--- a/team-ONEBILLION/tablet-tracker/tablet-tracker-ONEBILLION.csv
+++ b/team-ONEBILLION/tablet-tracker/tablet-tracker-ONEBILLION.csv
@@ -218,7 +218,7 @@ YUFMWA,96,6116001784,6118002102,2018-03-19,5B20001232,2018-08-22,,,,,,,,,,
 NWRWET,96,6116001655,6118002718,2018-03-19,6118002182,2018-08-22,,,,,,,,,,
 RRGYMW,96,6118003604,5A27000022,2018-03-19,6116002009,2018-08-22,,,,,,,,,,
 BXYAPP,96,6116001041,6115000983,2018-03-19,6118001750,2018-08-22,6116002493,2019-01-08,,,,,,,,
-VUBFBE,96,6118002149,6114000024,2018-02-19,5427001537,2018-03-19,6116000966,2018-07-31,6118002599,2018-08-22,,,,,,
+VUBFBE,96,6118002149,6114000024,2018-02-19,5A27001537,2018-03-19,6116000966,2018-07-31,6118002599,2018-08-22,,,,,,
 ZXERZB,96,6116002037,5A28002545,2018-03-19,5A27000071,2018-08-22,,,,,,,,,,
 MEZHTG,96,6112001270,5A22001269,2018-03-19,6129000602,2018-08-22,6118002180,2019-01-08,,,,,,,,
 QUGMVG,96,6115000427,6116002161,2018-03-19,6115001556,2018-08-22,,,,,,,,,,