diff --git a/matter/src/cert/mod.rs b/matter/src/cert/mod.rs
index 7af1867..621b28d 100644
--- a/matter/src/cert/mod.rs
+++ b/matter/src/cert/mod.rs
@@ -29,7 +29,7 @@ use num_derive::FromPrimitive;
 pub use self::asn1_writer::ASN1Writer;
 use self::printer::CertPrinter;
 
-pub const MAX_CERT_TLV_LEN: usize = 300; // TODO
+pub const MAX_CERT_TLV_LEN: usize = 1024; // TODO
 
 // As per https://datatracker.ietf.org/doc/html/rfc5280
 
diff --git a/matter/src/data_model/objects/encoder.rs b/matter/src/data_model/objects/encoder.rs
index b4066e6..d068ce7 100644
--- a/matter/src/data_model/objects/encoder.rs
+++ b/matter/src/data_model/objects/encoder.rs
@@ -368,10 +368,16 @@ impl<'a, 'b, 'c> CmdDataEncoder<'a, 'b, 'c> {
 
                 match handler.invoke(transaction, &cmd, &data, encoder) {
                     Ok(()) => cmd.success(&tracker),
-                    Err(error) => cmd.status(error.into()),
+                    Err(error) => {
+                        error!("Error invoking command: {}", error);
+                        cmd.status(error.into())
+                    }
                 }
             }
-            Err(status) => Some(status),
+            Err(status) => {
+                error!("Error invoking command: {:?}", status);
+                Some(status)
+            }
         };
 
         if let Some(status) = status {
diff --git a/matter/src/interaction_model/core.rs b/matter/src/interaction_model/core.rs
index 371f8e8..1e9827b 100644
--- a/matter/src/interaction_model/core.rs
+++ b/matter/src/interaction_model/core.rs
@@ -470,6 +470,8 @@ impl<'a> InvReq<'a> {
     }
 
     pub fn complete(self, tx: &mut Packet, _transaction: &mut Transaction) -> Result<bool, Error> {
+        let suppress = self.suppress_response.unwrap_or_default();
+
         let mut tw = TLVWriter::new(tx.get_writebuf()?);
 
         if self.inv_requests.is_some() {
@@ -478,7 +480,12 @@ impl<'a> InvReq<'a> {
 
         tw.end_container()?;
 
-        Ok(true)
+        Ok(if suppress {
+            error!("Supress response is set, is this the expected handling?");
+            false
+        } else {
+            true
+        })
     }
 }
 
diff --git a/matter/src/transport/exchange.rs b/matter/src/transport/exchange.rs
index 333eab3..a25baba 100644
--- a/matter/src/transport/exchange.rs
+++ b/matter/src/transport/exchange.rs
@@ -25,6 +25,7 @@ use crate::error::Error;
 use crate::interaction_model::core::{ResumeReadReq, ResumeSubscribeReq};
 use crate::secure_channel;
 use crate::secure_channel::case::CaseSession;
+use crate::tlv::print_tlv_list;
 use crate::utils::epoch::Epoch;
 use crate::utils::rand::Rand;
 
@@ -204,13 +205,14 @@ impl Exchange {
             return Ok(false);
         }
 
-        trace!("payload: {:x?}", tx.as_mut_slice());
+        trace!("payload: {:x?}", tx.as_slice());
         info!(
-            "{} with proto id: {} opcode: {}",
+            "{} with proto id: {} opcode: {}, tlv:\n",
             "Sending".blue(),
             tx.get_proto_id(),
             tx.get_proto_opcode(),
         );
+        print_tlv_list(tx.as_slice());
 
         tx.proto.exch_id = self.id;
         if self.role == Role::Initiator {