Hi There,
I’m trying to migrate A12 models from 2023.06-ext7 to 2024.06-ext2 and I have a form-model that can’t be migrated due to the following error:
[2024-11-22 18:01:51.629] [error] [Form Migration Tool] Failed to migrate Contract_form. Error: Model Contract_form is not a valid form model or can not be validated. The field/object at path "/content/screens/0/screenElements/5/screenElements/0" must NOT have additional properties
The mentioned part in the form-model is the following control-grid:
{
"type": "ControlGrid",
"id": "controlgrid_58208",
"name": "OfferRequest",
"layout": {
"lg": "3-3-3-3"
},
"row": [
{
"type": "Row",
"id": "row_706b0",
"title": {
"type": "Multilingual",
"multilingualText": {
"text": [
{
"locale": "en",
"text": "Offer requested by"
},
{
"locale": "de",
"text": "Anfrage erstellt von"
}
]
}
},
"cell": [
{
"type": "ExpressionCell",
"id": "expressioncell_2b713",
"name": "OfferRequestSentBy",
"expression": "kontext(Contract){\n kontext(OfferData){\n kontext(OfferRequestInformation){\n kontext(OfferRequestedBy){\n [FirstName]\" \"[LastName]\n }\n }\n }\n}",
"label": {
"type": "Multilingual",
"multilingualText": {
"text": [
{
"locale": "en",
"text": "Name"
},
{
"locale": "de",
"text": "Name"
}
]
}
}
},
{
"type": "Control",
"id": "control_ee2f7",
"readonly": true,
"elementRef": "include_c503e_field_09bed"
}
]
},
{
"type": "MultiColumnSection",
"id": "multicolumnsection_9efdf",
"name": "PremiumType"
},
{
"type": "Row",
"id": "row_d90ba",
"title": {
"type": "Multilingual",
"multilingualText": {
"text": [
{
"locale": "en",
"text": "Request sent to"
},
{
"locale": "de",
"text": "Angebotsanfrage verschickt an"
}
]
}
},
"cell": [
{
"type": "ExpressionCell",
"id": "expressioncell_61189",
"name": "OfferRequestSentTo",
"expression": "kontext(Contract){\n kontext(OfferData){\n kontext(OfferRequestInformation){\n kontext(RequestRecipient){\n [RecipientFirstName]\" \"[RecipientLastName]\n }\n }\n }\n}",
"label": {
"type": "Multilingual",
"multilingualText": {
"text": [
{
"locale": "en",
"text": "Name"
},
{
"locale": "de",
"text": "Name"
}
]
}
}
},
{
"type": "Control",
"id": "control_62bcc",
"elementRef": "include_c503e_field_c002f"
},
{
"type": "Control",
"id": "control_c02f0",
"elementRef": "include_c503e_field_9ef60"
}
]
},
{
"type": "Row",
"id": "row_2e827",
"cell": [
{
"type": "Control",
"id": "control_0a3b2",
"span": {
"lg": 3
},
"autoExpand": true,
"elementRef": "include_c503e_field_03270"
}
]
}
]
}
Can anyone find out what the not-allowed “additional properties” are?
Thank you very much! 
