I am trying to create Delivery plan in the Azure Devops project using Azure Devops REST Apis. I have used following method to create the same.
https://learn.microsoft.com/en-us/rest/api/azure/devops/work/plans/create?view=azure-devops-rest-6.0
POST https://dev.azure.com/{organization}/{project}/_apis/work/plans?api-version=6.0
and I am sending following data in the request body properties
{
"properties": {
"teamBacklogMappings": [
{
"teamId": "09d57738-697f-4433-abdd-b80a2bc6337b",
"categoryReferenceName": "Microsoft.RequirementCategory"
},
{
"teamId": "5df45eec-4108-474a-8d93-bc09c0b9037e",
"categoryReferenceName": "Microsoft.RequirementCategory"
},
{
"teamId": "e8ed402b-68e7-4140-96f2-07790a08788b",
"categoryReferenceName": "Microsoft.RequirementCategory"
},
{
"teamId": "14425694-efa5-454e-811c-e9e03d79198f",
"categoryReferenceName": "Microsoft.RequirementCategory"
},
{
"teamId": "b02690e9-1f48-421a-a918-3b23cc9a1b73",
"categoryReferenceName": "Microsoft.RequirementCategory"
}
],
"cardSettings": {
"fields": {
"showId": true,
"showAssignedTo": true,
"assignedToDisplayFormat": "avatarOnly",
"showState": true,
"showTags": true,
"showParent": false,
"showEmptyFields": true,
"showChildRollup": true,
"additionalFields": null,
"coreFields": [
{
"referenceName": "System.AssignedTo",
"displayName": "Assigned To",
"fieldType": "string",
"isIdentity": true
},
{
"referenceName": "System.Id",
"displayName": "ID",
"fieldType": "integer",
"isIdentity": false
},
{
"referenceName": "System.State",
"displayName": "State",
"fieldType": "string",
"isIdentity": false
},
{
"referenceName": "System.Tags",
"displayName": "Tags",
"fieldType": "plainText",
"isIdentity": false
}
]
}
},
"markers": [],
"styleSettings": [
{
"name": "BLOCKER",
"isEnabled": "True",
"filter": "[System.Tags] CONTAINS 'BLOCKER'",
"clauses": [
{
"fieldName": "System.Tags",
"logicalOperator": "AND",
"operator": "CONTAINS",
"value": "BLOCKER"
}
],
"settings": {
"background-color": "#E60017",
"title-color": "#000000"
}
},
{
"name": "New",
"isEnabled": "True",
"filter": "[System.State] = 'New'",
"clauses": [
{
"fieldName": "System.State",
"logicalOperator": "AND",
"operator": "=",
"value": "New"
}
],
"settings": {
"background-color": "#AAAAAA",
"title-color": "#000000"
}
},
{
"name": "Dev Completed",
"isEnabled": "True",
"filter": "[System.State] = 'Development Completed'",
"clauses": [
{
"fieldName": "System.State",
"logicalOperator": "AND",
"operator": "=",
"value": "Development Completed"
}
],
"settings": {
"background-color": "#D7E587",
"title-color": "#000000"
}
},
{
"name": "Deployed to QA",
"isEnabled": "True",
"filter": "[System.State] = 'Deployed to QA (SIT)'",
"clauses": [
{
"fieldName": "System.State",
"logicalOperator": "AND",
"operator": "=",
"value": "Deployed to QA (SIT)"
}
],
"settings": {
"background-color": "#C3D84C",
"title-color": "#000000"
}
},
{
"name": "Deployed to UAT",
"isEnabled": "True",
"filter": "[System.State] = 'Deployed to UAT'",
"clauses": [
{
"fieldName": "System.State",
"logicalOperator": "AND",
"operator": "=",
"value": "Deployed to UAT"
}
],
"settings": {
"background-color": "#60AF49",
"title-color": "#000000"
}
},
{
"name": "Deployed to PROD",
"isEnabled": "True",
"filter": "[System.State] = 'Completed'",
"clauses": [
{
"fieldName": "System.State",
"logicalOperator": "AND",
"operator": "=",
"value": "Completed"
}
],
"settings": {
"background-color": "#00643A",
"title-color": "#000000"
}
}
],
"tagStyleSettings": []
}
}
However Styling rules are not getting created in the project.

Got this done by using Update for the Delivery plan immediately after creating the same. Update it with same properties though you will have to add revision property to the request body. https://learn.microsoft.com/en-us/rest/api/azure/devops/work/plans/update?view=azure-devops-rest-6.0
https://dev.azure.com/{organization}/{project}/_apis/work/plans/{id}?api-version=6.0