diff --git a/fsw/src/sc_app.c b/fsw/src/sc_app.c
index c92d9db..8b53d3f 100644
--- a/fsw/src/sc_app.c
+++ b/fsw/src/sc_app.c
@@ -41,6 +41,7 @@
 #include "sc_perfids.h"
 #include "sc_version.h"
 #include "sc_verify.h"
+#include "sc_tbldefs.h"
 #include <string.h>
 
 /**************************************************************************
diff --git a/fsw/src/sc_app.h b/fsw/src/sc_app.h
index 6dd8fea..d13c6e7 100644
--- a/fsw/src/sc_app.h
+++ b/fsw/src/sc_app.h
@@ -184,9 +184,6 @@ void SC_RegisterManageCmds(void);
 
 #define SC_BYTES_IN_WORD 4 /**< \brief Number of bytes in "word" used to define table lengths */
 
-#define SC_ATS_HEADER_SIZE (sizeof(SC_AtsEntryHeader_t)) /**< \brief ATS header size in bytes */
-#define SC_RTS_HEADER_SIZE (sizeof(SC_RtsEntryHeader_t)) /**< \brief RTS header size in bytes */
-
 #define SC_ATS_BUFF_SIZE32    (SC_ATS_BUFF_SIZE / 2)    /**< \brief ATS buffer number of 32-bit elements */
 #define SC_RTS_BUFF_SIZE32    (SC_RTS_BUFF_SIZE / 2)    /**< \brief RTS buffer number of 32-bit elements */
 #define SC_APPEND_BUFF_SIZE32 (SC_APPEND_BUFF_SIZE / 2) /**< \brief Append buffer number of 32-bit elements */
@@ -225,57 +222,6 @@ void SC_RegisterManageCmds(void);
 #define SC_RTS_ID_TO_INDEX(id)         ((id)-1)      /**< \brief Convert RTS ID to index */
 #define SC_RTS_INDEX_TO_ID(index)      ((index) + 1) /**< \brief Convert RTS table index to ID */
 
-/**
- *  \brief ATS Table Entry Header Type
- */
-typedef struct
-{
-    uint16 Pad; /**< \brief Structure padding */
-
-    uint16 CmdNumber; /**< \brief command number, range = 1 to SC_MAX_ATS_CMDS */
-
-    uint16 TimeTag_MS; /**< \brief Time tag most significant 16 bits */
-    uint16 TimeTag_LS; /**< \brief Time tag least significant 16 bits */
-
-    /*
-     * Note: the command packet data is variable length,
-     *       the command packet header (not shown here),
-     *       comes directly after the time tag
-     */
-} SC_AtsEntryHeader_t;
-
-/**
- * \brief ATS header and message header
- */
-typedef struct
-{
-    SC_AtsEntryHeader_t Header; /**< \brief ATS header */
-    CFE_MSG_Message_t   Msg;    /**< \brief MSG header */
-} SC_AtsEntry_t;
-
-/**
- * \brief RTS Command Header Type
- */
-typedef struct
-{
-    SC_RelTimeTag_t TimeTag; /**< \brief Relative time tag */
-
-    /*
-     * Note: the command packet data is variable length,
-     *       the command packet header (not shown here),
-     *       comes directly after Time tag.
-     */
-} SC_RtsEntryHeader_t;
-
-/**
- * \brief RTS header and message header
- */
-typedef struct
-{
-    SC_RtsEntryHeader_t Header; /**< \brief RTS header */
-    CFE_MSG_Message_t   Msg;    /**< \brief MSG header */
-} SC_RtsEntry_t;
-
 /**
  *  \brief SC Operational Data Structure
  *
diff --git a/fsw/src/sc_atsrq.c b/fsw/src/sc_atsrq.c
index efbbf2a..a464f85 100644
--- a/fsw/src/sc_atsrq.c
+++ b/fsw/src/sc_atsrq.c
@@ -35,6 +35,7 @@
 #include "sc_loads.h"
 #include "sc_utils.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 
 /**************************************************************************
  **
diff --git a/fsw/src/sc_loads.c b/fsw/src/sc_loads.c
index 5e5e69b..06a5d46 100644
--- a/fsw/src/sc_loads.c
+++ b/fsw/src/sc_loads.c
@@ -36,6 +36,7 @@
 #include "sc_atsrq.h"
 #include "sc_utils.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 #include <string.h>
 
 /**************************************************************************
diff --git a/fsw/src/sc_tbldefs.h b/fsw/src/sc_tbldefs.h
index 93083c7..741d299 100644
--- a/fsw/src/sc_tbldefs.h
+++ b/fsw/src/sc_tbldefs.h
@@ -30,6 +30,12 @@
 #include "cfe.h"
 #include "sc_platform_cfg.h"
 
+/*************************************************************************
+ * Macro Definitions
+ *************************************************************************/
+#define SC_ATS_HEADER_SIZE (sizeof(SC_AtsEntryHeader_t)) /**< \brief ATS header size in bytes */
+#define SC_RTS_HEADER_SIZE (sizeof(SC_RtsEntryHeader_t)) /**< \brief RTS header size in bytes */
+
 /**
  * \defgroup cfscstblids ID definitions for cFE Table Services manage table request command
  * \{
@@ -107,4 +113,55 @@ typedef struct
     uint16          UseCtr;          /**< \brief how many times RTS is run */
 } SC_RtsInfoEntry_t;
 
+/**
+ *  \brief ATS Table Entry Header Type
+ */
+typedef struct
+{
+    uint16 Pad; /**< \brief Structure padding */
+
+    uint16 CmdNumber; /**< \brief command number, range = 1 to SC_MAX_ATS_CMDS */
+
+    uint16 TimeTag_MS; /**< \brief Time tag most significant 16 bits */
+    uint16 TimeTag_LS; /**< \brief Time tag least significant 16 bits */
+
+    /*
+     * Note: the command packet data is variable length,
+     *       the command packet header (not shown here),
+     *       comes directly after the time tag
+     */
+} SC_AtsEntryHeader_t;
+
+/**
+ * \brief ATS header and message header
+ */
+typedef struct
+{
+    SC_AtsEntryHeader_t Header; /**< \brief ATS header */
+    CFE_MSG_Message_t   Msg;    /**< \brief MSG header */
+} SC_AtsEntry_t;
+
+/**
+ * \brief RTS Command Header Type
+ */
+typedef struct
+{
+    SC_RelTimeTag_t TimeTag; /**< \brief Relative time tag */
+
+    /*
+     * Note: the command packet data is variable length,
+     *       the command packet header (not shown here),
+     *       comes directly after Time tag.
+     */
+} SC_RtsEntryHeader_t;
+
+/**
+ * \brief RTS header and message header
+ */
+typedef struct
+{
+    SC_RtsEntryHeader_t Header; /**< \brief RTS header */
+    CFE_MSG_Message_t   Msg;    /**< \brief MSG header */
+} SC_RtsEntry_t;
+
 #endif
diff --git a/fsw/src/sc_utils.h b/fsw/src/sc_utils.h
index fa7572c..e6ec3da 100644
--- a/fsw/src/sc_utils.h
+++ b/fsw/src/sc_utils.h
@@ -26,6 +26,7 @@
 
 #include "cfe.h"
 #include "sc_app.h"
+#include "sc_tbldefs.h"
 
 /**
  * \brief Gets the current time from CFE
diff --git a/unit-test/sc_app_tests.c b/unit-test/sc_app_tests.c
index 6eae9ea..ea05ecb 100644
--- a/unit-test/sc_app_tests.c
+++ b/unit-test/sc_app_tests.c
@@ -31,6 +31,7 @@
 #include "sc_loads.h"
 #include "sc_msgids.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/unit-test/sc_atsrq_tests.c b/unit-test/sc_atsrq_tests.c
index bf4a3c9..4674a15 100644
--- a/unit-test/sc_atsrq_tests.c
+++ b/unit-test/sc_atsrq_tests.c
@@ -31,6 +31,7 @@
 #include "sc_loads.h"
 #include "sc_msgids.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/unit-test/sc_cmds_tests.c b/unit-test/sc_cmds_tests.c
index ef39ebf..c51b5a6 100644
--- a/unit-test/sc_cmds_tests.c
+++ b/unit-test/sc_cmds_tests.c
@@ -30,6 +30,7 @@
 #include "sc_test_utils.h"
 #include "sc_utils.h"
 #include "sc_version.h"
+#include "sc_tbldefs.h"
 #include "cfe_tbl_msg.h"
 #include <time.h>
 
diff --git a/unit-test/sc_loads_tests.c b/unit-test/sc_loads_tests.c
index fe33d8a..1de958c 100644
--- a/unit-test/sc_loads_tests.c
+++ b/unit-test/sc_loads_tests.c
@@ -31,6 +31,7 @@
 #include "sc_loads.h"
 #include "sc_msgids.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/unit-test/sc_state_tests.c b/unit-test/sc_state_tests.c
index 0f4e63a..f7299d5 100644
--- a/unit-test/sc_state_tests.c
+++ b/unit-test/sc_state_tests.c
@@ -31,6 +31,7 @@
 #include "sc_loads.h"
 #include "sc_msgids.h"
 #include "sc_events.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/unit-test/sc_utils_tests.c b/unit-test/sc_utils_tests.c
index d5aa700..bbba715 100644
--- a/unit-test/sc_utils_tests.c
+++ b/unit-test/sc_utils_tests.c
@@ -21,6 +21,7 @@
 #include "sc_utils.h"
 #include "sc_events.h"
 #include "sc_msgids.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 
 /* UT includes */
diff --git a/unit-test/stubs/sc_utils_stubs.c b/unit-test/stubs/sc_utils_stubs.c
index 49c8def..abbbd02 100644
--- a/unit-test/stubs/sc_utils_stubs.c
+++ b/unit-test/stubs/sc_utils_stubs.c
@@ -22,6 +22,7 @@
  */
 
 #include "sc_utils.h"
+#include "sc_tbldefs.h"
 
 /* UT includes */
 #include "uttest.h"
diff --git a/unit-test/utilities/sc_test_utils.c b/unit-test/utilities/sc_test_utils.c
index 279338a..0bb2af9 100644
--- a/unit-test/utilities/sc_test_utils.c
+++ b/unit-test/utilities/sc_test_utils.c
@@ -27,6 +27,7 @@
  */
 
 #include "sc_app.h"
+#include "sc_tbldefs.h"
 #include "sc_test_utils.h"
 
 /* UT includes */
diff --git a/unit-test/utilities/sc_test_utils.h b/unit-test/utilities/sc_test_utils.h
index abef4c6..7ff690e 100644
--- a/unit-test/utilities/sc_test_utils.h
+++ b/unit-test/utilities/sc_test_utils.h
@@ -29,6 +29,7 @@
  */
 
 #include "sc_app.h"
+#include "sc_tbldefs.h"
 #include "utstubs.h"
 #include "cfe_msgids.h"
 #include "cfe_tbl_msg.h"