Step Functions ignoring Parameters, executing it with default input - aws-lambda

Question

I don't know if this is a bug of my own or Amazon's as I'm unable to properly understand what's going on.
I have the following Step Function (It's currently a work in progress), which takes care of validating an input and then sending it to an SQS lambda (CreateInAuth0 Step).
My problem is that apparently the SQS function is executing with the default parameters, fails, retries and then uses the ones specified in the Step Function. (Or at least that's what I'm gathering from the logs).
I want to know why it is ignoring the Parameters in the first go. Here's all the information I can gather.
There seems to be a difference between TaskStateEntered and TaskScheduled (which I believe it's ok).
{
"Comment": "Add the students to the platform and optionally adds them to their respective grades",
"StartAt": "AddStudents",
"States": {
"AddStudents": {
"Comment": "Validates that the students are OK",
"Type": "Task",
"Resource": "#AddStudents",
"Next": "Parallel"
},
"Parallel": {
"Type": "Parallel",
"Next": "FinishExecution",
"Branches": [
{
"StartAt": "CreateInAuth0",
"States": {
"CreateInAuth0": {
"Type": "Task",
"Resource": "arn:aws:states:::sqs:sendMessage.waitForTaskToken",
"Parameters": {
"QueueUrl": "#SQS_StudentsRegistrationSQSFifo",
"MessageBody": {
"execId.$": "$.result.execId",
"tenantType.$": "$.result.tenantType",
"tenantId.$": "$.result.tenantId",
"studentsToCreate.$": "$.result.newStudents.success",
"TaskToken.$": "$$.Task.Token",
"studentsSucceeded": []
}
},
"End": true
}
}
}
]
},
"FinishExecution": {
"Comment": "This signals the ending in DynamoDB that the transaction finished",
"Type": "Task",
"End": true,
"Resource": "arn:aws:states:::dynamodb:putItem",
"ResultPath": "$.dynamoDB",
"Parameters": {
"TableName": "#SchonDB",
"Item": {
"pk": {
"S.$": "$.arguments.tenantId:exec:$.id"
},
"sk": {
"S": "result"
},
"status": {
"S": "FINISHED"
},
"type": {
"S": "#EXEC_TYPE"
}
}
},
"Retry": [
{
"ErrorEquals": [
" States.Timeout"
],
"IntervalSeconds": 1,
"MaxAttempts": 5,
"BackoffRate": 2.0
}
],
"Catch": [
{
"ErrorEquals": [
"States.ALL"
],
"Next": "FinishExecutionIfFinishErrored"
}
]
},
"FinishExecutionIfFinishErrored": {
"Type": "Pass",
"End": true
}
}
}
Here's the visual:
Here's the execution event history:
Note: I have a try/catch statement inside the SQS function that wraps the entire SQS' execution.