(R3 Corda 4.8) Selected output constraint: net.corda.core.contracts.WhitelistedByZoneAttachmentConstraint#1f102389 not satisfying - corda

Question

I had cloned the cordapp-kotlin-template . I've defined a state called LoadState which looks like this:
#BelongsToContract(LoadContract::class)
data class LoadState(
val loadId: String,
val transporterName: String? = null,
val vehicleModel: String? = null,
val regLicenseNo: String? = null,
val totalWeight: Int? = null,
val notes: String? = null,
val suppliers: MutableList<SupplierDetailsModel> = mutableListOf(),
val recycler: Party,
override val participants: List<AbstractParty> = listOf(recycler)
) : QueryableState {
override fun generateMappedObject(schema: MappedSchema): PersistentState {
if (schema is LoadSchemaV1) {
return PersistentLoadState(this.loadId)
} else {
throw IllegalArgumentException("Unsupported Schema.")
}
}
override fun supportedSchemas(): Iterable<MappedSchema> {
return listOf(LoadSchemaV1())
}
}
When I use the application for the first time and issue a LoadState say LO123 it works fine. The state is issued and recorded in the vault as well.
This is how my the LoadState issue flow looks like:
#Suspendable
override fun call(): SignedTransaction {
val notary = serviceHub.networkMapCache.getNotary(CordaX500Name.parse("O=Notary,L=London,C=GB"))
progressTracker.currentStep = TX_COMPONENTS
val recyclerName = CordaX500Name(
organisation = "MyRecycler",
locality = "Mumbai",
country = "IN"
)
val recycler = serviceHub.identityService.wellKnownPartyFromX500Name(recyclerName)
?: throw IllegalArgumentException("Could not find party Recycler.")
val outputState = LoadState(
loadId = req.loadId,
loadDate = req.loadDate,
transporterName = req.transporterName,
vehicleModel = req.vehicleModel,
regLicenseNo = req.regLicenseNo,
totalWeight = req.totalWeight,
assets = req.assets,
suppliers = req.suppliers,
recycler = recycler,
notes = req.notes
)
val command = Command(LoadContract.Commands.Create(), listOf(ourIdentity.owningKey))
progressTracker.currentStep = TX_BUILDING
val txBuilder = TransactionBuilder(notary = notary)
.addOutputState(outputState, LoadContract.ID)
.addCommand(command)
// signing the transaction
progressTracker.currentStep = TX_SIGNING
val signedTx = serviceHub.signInitialTransaction(txBuilder)
// verifying the transaction
progressTracker.currentStep = TX_VERIFICATION
txBuilder.verify(serviceHub)
// We finalise the transaction and then send it to the counterparty.
progressTracker.currentStep = FINALIZATION
val recyclerSession = initiateFlow(recycler)
return subFlow(FinalityFlow(signedTx, listOf()))
}
Now there's a requirement to add a new field to our LoadState:
val myNewField: String? = null
After adding this new field to the LoadState I'm running the deployNodes command. Once the build folders are generated I'm copying the contents of the Node/cordapps folder to my old build Node/cordapps folder.
Now, while starting the nodes I'm running the migration commands (core schemas and app schemas). Once the migration process is complete and the nodes are up, I'm calling an api endpoint which invokes a flow which takes L0123 as input, copies it, and modifies some params and create a new output state of type LoadState. The error is thrown at:
txBuilder.verify(serviceHub) in my UpdateLoadFlow. This is how my update flow looks like:
#Suspendable
override fun call(): SignedTransaction {
val notary = serviceHub.networkMapCache.getNotary(CordaX500Name.parse("O=Notary,L=London,C=GB"))
progressTracker.currentStep = TX_COMPONENTS
val recyclerName = CordaX500Name(
organisation = "MyRecycler",
locality = "Mumbai",
country = "IN"
)
val recycler = serviceHub.identityService.wellKnownPartyFromX500Name(recyclerName)
?: throw IllegalArgumentException("Could not find party Recycler.")
val inputState = QueryVault().queryLoadById(req.loadId, Vault.StateStatus.UNCONSUMED, serviceHub.vaultService)
?: throw Exception("Load ${req.loadId} not found.")
val vaultData = inputState.state.data
var outputState = vaultData.copy(myNewField = "some new value");
val command = Command(LoadContract.Commands.Update(), listOf(ourIdentity.owningKey))
progressTracker.currentStep = TX_BUILDING
val txBuilder = TransactionBuilder(notary = notary)
.addInputState(inputState)
.addOutputState(outputState, LoadContract.ID)
.addCommand(command)
txBuilder.verify(serviceHub)
// signing the transaction
progressTracker.currentStep = TX_SIGNING
val signedTx = serviceHub.signInitialTransaction(txBuilder)
// verifying the transaction
progressTracker.currentStep = TX_VERIFICATION
// We finalise the transaction and then send it to the counterparty.
progressTracker.currentStep = FINALIZATION
val recyclerSession = initiateFlow(recycler)
return subFlow(FinalityFlow(signedTx, listOf()))
}
Please help me out with this.

Answer 1

After our discussion in the above comments section, it appears that your states have been issued using Whitelist zone constraint.
Also looking at the code it is clear that you have not explicitly added Whitelist Zone constraints for your states.
Then there remain two more possibilities by which states are issued using Whitelist Zone constraint.
One is you are using some Corda version before 4 or you have included the necessary configs to include white list zone constraints in network bootstrapper as specified here.
You have two options - either start from scratch and make sure you use Corda 4.
If you cannot start from scratch follow this path to first migrate the whitelist zone constraints to signature constraints, before running your UpdateLoadFlow. You can refer to this blog which talks about constraint migration.