diff --git a/doc/software-manual.tex b/doc/software-manual.tex
index 8ce4fd456429e090617749a8340d91f024cd391d..03bf64bdfc09ba7d694e4844881eb758188fbb61 100644
--- a/doc/software-manual.tex
+++ b/doc/software-manual.tex
@@ -5715,7 +5715,7 @@ Specifies sii_num_units_in_shutter_interval for single entry.If multiple entries
   \Default{false} &
   Enables (true) or disables (false) the insertion of the neural network post-filter characteristics SEI message.
   \\
-  \Option{SEINNPFCSuffixFlag} &
+  \Option{SEINNPFCUseSuffixSEI} &
   \Default{false} &
   Code NNPFC SEI either as suffix (true) or prefix (false) SEI message.
   \\
@@ -6040,7 +6040,7 @@ Specifies sii_num_units_in_shutter_interval for single entry.If multiple entries
   \Default{false} &
   Enables (true) or disables (false) the insertion of the neural network post-filter activation SEI message.
   \\
-  \Option{SEINNPostFilterActivationSuffixFlag} &
+  \Option{SEINNPostFilterActivationUseSuffixSEI} &
   \Default{false} &
   Code NNPFA SEI either as suffix (true) or prefix (false) SEI message.
   \\
diff --git a/source/App/EncoderApp/EncApp.cpp b/source/App/EncoderApp/EncApp.cpp
index 274f1210c680e10ce1a126055fa8c2b01e7f891d..e285c1af8068566eee817f46b5e8ea51840a9de9 100644
--- a/source/App/EncoderApp/EncApp.cpp
+++ b/source/App/EncoderApp/EncApp.cpp
@@ -1185,7 +1185,7 @@ void EncApp::xInitLibCfg( int layerIdx )
 #endif
   m_cEncLib.setNNPostFilterSEICharacteristicsEnabled             (m_nnPostFilterSEICharacteristicsEnabled);
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  m_cEncLib.setNNPostFilterSEICharacteristicsSuffixFlag          (m_nnPostFilterSEICharacteristicsSuffixFlag);
+  m_cEncLib.setNNPostFilterSEICharacteristicsUseSuffixSEI        (m_nnPostFilterSEICharacteristicsUseSuffixSEI);
 #endif
   m_cEncLib.setNNPostFilterSEICharacteristicsNumFilters          (m_nnPostFilterSEICharacteristicsNumFilters);
   for (int i = 0; i < m_nnPostFilterSEICharacteristicsNumFilters; i++)
@@ -1330,7 +1330,7 @@ void EncApp::xInitLibCfg( int layerIdx )
   }
   m_cEncLib.setNnPostFilterSEIActivationEnabled                  (m_nnPostFilterSEIActivationEnabled);
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  m_cEncLib.setNnPostFilterSEIActivationSuffixFlag               (m_nnPostFilterSEIActivationSuffixFlag);
+  m_cEncLib.setNnPostFilterSEIActivationUseSuffixSEI             (m_nnPostFilterSEIActivationUseSuffixSEI);
 #endif
   m_cEncLib.setNnPostFilterSEIActivationTargetId(m_nnPostFilterSEIActivationTargetId);
   m_cEncLib.setEntropyCodingSyncEnabledFlag                      ( m_entropyCodingSyncEnabledFlag );
diff --git a/source/App/EncoderApp/EncAppCfg.cpp b/source/App/EncoderApp/EncAppCfg.cpp
index effaa5e061fefdad079fbf2609556481bdec6ed2..2f2ccb9c63dd54ebca6e5a6f2d7904338c82cb6f 100644
--- a/source/App/EncoderApp/EncAppCfg.cpp
+++ b/source/App/EncoderApp/EncAppCfg.cpp
@@ -1748,7 +1748,7 @@ bool EncAppCfg::parseCfg( int argc, char* argv[] )
 
   opts.addOptions()("SEINNPFCEnabled",  m_nnPostFilterSEICharacteristicsEnabled, false, "Control generation of the Neural Network Post Filter Characteristics SEI messages");
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  opts.addOptions()("SEINNPFCSuffixFlag",  m_nnPostFilterSEICharacteristicsSuffixFlag, false, "Code NNPFC SEI either as suffix (1) or prefix (0) SEI message");
+  opts.addOptions()("SEINNPFCUseSuffixSEI",  m_nnPostFilterSEICharacteristicsUseSuffixSEI, false, "Code NNPFC SEI either as suffix (1) or prefix (0) SEI message");
 #endif
   opts.addOptions()( "SEINNPFCNumFilters",                                      m_nnPostFilterSEICharacteristicsNumFilters,                                  0, "Specifies the number of Neural Network Post Filter Characteristics SEI messages" );
   for (int i = 0; i < MAX_NUM_NN_POST_FILTERS; i++)
@@ -1984,7 +1984,7 @@ bool EncAppCfg::parseCfg( int argc, char* argv[] )
 
     opts.addOptions()("SEINNPostFilterActivationEnabled", m_nnPostFilterSEIActivationEnabled, false, "Control use of the Neural Network Post Filter SEI on current picture");
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-    opts.addOptions()("SEINNPostFilterActivationSuffixFlag",  m_nnPostFilterSEIActivationSuffixFlag, false, "Code NNPFA SEI either as suffix (1) or prefix (0) SEI message");
+    opts.addOptions()("SEINNPostFilterActivationUseSuffixSEI",  m_nnPostFilterSEIActivationUseSuffixSEI, false, "Code NNPFA SEI either as suffix (1) or prefix (0) SEI message");
 #endif
     opts.addOptions()("SEINNPostFilterActivationTargetId", m_nnPostFilterSEIActivationTargetId, 0u, "Target id of the Neural Network Post Filter on current picture");
     opts.addOptions()("SEINNPostFilterActivationCancelFlag", m_nnPostFilterSEIActivationCancelFlag, false, "Control use of the target neural network post filter established by any previous NNPFA SEI message");
diff --git a/source/App/EncoderApp/EncAppCfg.h b/source/App/EncoderApp/EncAppCfg.h
index 560a8417b9edf606dd5d3b1b79e018b2a36eb635..8caa11d6beb8b63ee60eb4e1f4bea6e3df692392 100644
--- a/source/App/EncoderApp/EncAppCfg.h
+++ b/source/App/EncoderApp/EncAppCfg.h
@@ -730,7 +730,7 @@ protected:
 
   bool                  m_nnPostFilterSEICharacteristicsEnabled;
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  bool                  m_nnPostFilterSEICharacteristicsSuffixFlag;
+  bool                  m_nnPostFilterSEICharacteristicsUseSuffixSEI;
 #endif
   int                   m_nnPostFilterSEICharacteristicsNumFilters;
   uint32_t              m_nnPostFilterSEICharacteristicsId[MAX_NUM_NN_POST_FILTERS];
@@ -792,7 +792,7 @@ protected:
 
   bool                  m_nnPostFilterSEIActivationEnabled;
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  bool                  m_nnPostFilterSEIActivationSuffixFlag;
+  bool                  m_nnPostFilterSEIActivationUseSuffixSEI;
 #endif
   uint32_t              m_nnPostFilterSEIActivationTargetId;
   uint32_t              m_nnPostFilterSEICharacteristicsNumberInputDecodedPicturesMinus1[MAX_NUM_NN_POST_FILTERS];
diff --git a/source/Lib/EncoderLib/EncCfg.h b/source/Lib/EncoderLib/EncCfg.h
index 1e96a4f1afc2be01e955388d92b33b06c71a5d9d..c458960233760c3c0b6175b53b824c52ef6daa73 100644
--- a/source/Lib/EncoderLib/EncCfg.h
+++ b/source/Lib/EncoderLib/EncCfg.h
@@ -695,7 +695,7 @@ protected:
 
   bool                    m_nnPostFilterSEICharacteristicsEnabled;
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  bool                    m_nnPostFilterSEICharacteristicsSuffixFlag;
+  bool                    m_nnPostFilterSEICharacteristicsUseSuffixSEI;
 #endif
   int                     m_nnPostFilterSEICharacteristicsNumFilters;
   uint32_t                m_nnPostFilterSEICharacteristicsId[MAX_NUM_NN_POST_FILTERS];
@@ -763,7 +763,7 @@ protected:
 
   bool                    m_nnPostFilterSEIActivationEnabled;
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  bool                    m_nnPostFilterSEIActivationSuffixFlag;
+  bool                    m_nnPostFilterSEIActivationUseSuffixSEI;
 #endif
   uint32_t                m_nnPostFilterSEIActivationTargetId;
   bool                    m_nnPostFilterSEIActivationCancelFlag;
@@ -1939,8 +1939,8 @@ public:
   void        setNNPostFilterSEICharacteristicsEnabled(bool enabledFlag)                                                { m_nnPostFilterSEICharacteristicsEnabled = enabledFlag; }
   bool        getNNPostFilterSEICharacteristicsEnabled() const                                                          { return m_nnPostFilterSEICharacteristicsEnabled; }
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  void        setNNPostFilterSEICharacteristicsSuffixFlag(bool suffixFlag)                                              { m_nnPostFilterSEICharacteristicsSuffixFlag = suffixFlag; }
-  bool        getNNPostFilterSEICharacteristicsSuffixFlag() const                                                       { return m_nnPostFilterSEICharacteristicsSuffixFlag; }
+  void        setNNPostFilterSEICharacteristicsUseSuffixSEI(bool suffixFlag)                                            { m_nnPostFilterSEICharacteristicsUseSuffixSEI = suffixFlag; }
+  bool        getNNPostFilterSEICharacteristicsUseSuffixSEI() const                                                     { return m_nnPostFilterSEICharacteristicsUseSuffixSEI; }
 #endif
   void        setNNPostFilterSEICharacteristicsNumFilters(int numFilters)                                               { m_nnPostFilterSEICharacteristicsNumFilters = numFilters; }
   int         getNNPostFilterSEICharacteristicsNumFilters() const                                                       { return m_nnPostFilterSEICharacteristicsNumFilters; }
@@ -2085,8 +2085,8 @@ public:
   void        setNnPostFilterSEIActivationEnabled(bool enabledFlag)                                                     { m_nnPostFilterSEIActivationEnabled = enabledFlag; }
   bool        getNnPostFilterSEIActivationEnabled() const                                                               { return m_nnPostFilterSEIActivationEnabled; }
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  void        setNnPostFilterSEIActivationSuffixFlag(bool suffixFlag)                                                   { m_nnPostFilterSEIActivationSuffixFlag = suffixFlag; }
-  bool        getNnPostFilterSEIActivationSuffixFlag() const                                                            { return m_nnPostFilterSEIActivationSuffixFlag; }
+  void        setNnPostFilterSEIActivationUseSuffixSEI(bool suffixFlag)                                                 { m_nnPostFilterSEIActivationUseSuffixSEI = suffixFlag; }
+  bool        getNnPostFilterSEIActivationUseSuffixSEI() const                                                          { return m_nnPostFilterSEIActivationUseSuffixSEI; }
 #endif
   void        setNnPostFilterSEIActivationTargetId(uint32_t targetId)                                                   { m_nnPostFilterSEIActivationTargetId = targetId; }
   uint32_t    getNnPostFilterSEIActivationTargetId() const                                                              { return m_nnPostFilterSEIActivationTargetId; }
diff --git a/source/Lib/EncoderLib/EncGOP.cpp b/source/Lib/EncoderLib/EncGOP.cpp
index 58b060797cf061a5b8fa9f067b952e09066b1933..445702e4a88ecfdb11747a67d899c6b5546c3754 100644
--- a/source/Lib/EncoderLib/EncGOP.cpp
+++ b/source/Lib/EncoderLib/EncGOP.cpp
@@ -920,7 +920,7 @@ void EncGOP::xCreateIRAPLeadingSEIMessages (SEIMessages& seiMessages, const SPS
     seiMessages.push_back(seiShutterInterval);
   }
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  if (m_pcCfg->getNNPostFilterSEICharacteristicsEnabled() && !m_pcCfg->getNNPostFilterSEICharacteristicsSuffixFlag())
+  if (m_pcCfg->getNNPostFilterSEICharacteristicsEnabled() && !m_pcCfg->getNNPostFilterSEICharacteristicsUseSuffixSEI())
   {
     xCreateNNPostFilterCharacteristicsSEIMessages(seiMessages);
   }
@@ -1023,7 +1023,7 @@ void EncGOP::xCreatePerPictureSEIMessages (int picInGOP, SEIMessages& seiMessage
   }
 
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-  if (m_pcCfg->getNnPostFilterSEIActivationEnabled() && !m_pcCfg->getNnPostFilterSEIActivationSuffixFlag())
+  if (m_pcCfg->getNnPostFilterSEIActivationEnabled() && !m_pcCfg->getNnPostFilterSEIActivationUseSuffixSEI())
   {
     xCreateNNPostFilterActivationSEIMessage(seiMessages, slice);
   }
@@ -3950,7 +3950,7 @@ void EncGOP::compressGOP(int pocLast, int numPicRcvd, PicList &rcListPic, std::l
       }
 
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-      if (writePS && m_pcCfg->getNNPostFilterSEICharacteristicsEnabled() && m_pcCfg->getNNPostFilterSEICharacteristicsSuffixFlag())
+      if (writePS && m_pcCfg->getNNPostFilterSEICharacteristicsEnabled() && m_pcCfg->getNNPostFilterSEICharacteristicsUseSuffixSEI())
       {
         // create NNPostFilterSEICharacteristics SEI as suffix SEI
         xCreateNNPostFilterCharacteristicsSEIMessages(trailingSeiMessages);
@@ -4074,7 +4074,7 @@ void EncGOP::compressGOP(int pocLast, int numPicRcvd, PicList &rcListPic, std::l
       xCreatePerPictureSEIMessages(gopId, leadingSeiMessages, nestedSeiMessages, pcSlice);
 
 #if JVET_AD0057_NNPF_SUFFIX_SEI
-      if (m_pcCfg->getNnPostFilterSEIActivationEnabled() && m_pcCfg->getNnPostFilterSEIActivationSuffixFlag())
+      if (m_pcCfg->getNnPostFilterSEIActivationEnabled() && m_pcCfg->getNnPostFilterSEIActivationUseSuffixSEI())
       {
         // create NeuralNetworkPostFilterActivation SEI as suffix SEI
         xCreateNNPostFilterActivationSEIMessage(trailingSeiMessages, pcSlice);