Update commission split

Replaces commission splits for the specified sale. commissionSplits must not be null; use an empty array to clear all splits. Each split must include an agentGuid for a co-agent on the sale, amount/percentage cannot be negative, percentage cannot exceed 100, and each split must provide either amount or percentage (not both). Invalid payloads return 422.

Validation & Requirements

Required Parameters

• saleGuid (path, string, format=guid)
• form (body, object)

Required JSON Body Fields

• None

Validations

• Invalid GUID values in *Guid/*Guids fields return 422 Unprocessable Entity.
• Invalid date values in *date* fields return 422 Unprocessable Entity.
• Missing required request body returns 422 Unprocessable Entity with Missing request body..
• Additional business-rule validation may return 422 with details in the errors array.
• Commission percentages must be between 0 and 100, and commission amounts cannot be negative.
• Each commission entry must be percent or amount, not both.
• CommissionSplits cannot be null. Use an empty array to clear all commission splits.
• Each commission split requires a non-null agentGuid.
• commissionSplit agentGuid values must belong to existing co-agents on the sale.
• Commission split percentages must be between 0 and 100, and amounts cannot be negative.
• Each split must be percent or amount, not both.

Integration Requirement

• Retrieve the corresponding ...Form endpoint immediately before write operations to get current dynamic required fields and allowed values.