Vista API Enhancements — July 2026

The July 2026 release expands Job Cost contract APIs, adds cache support for additional modules, and fixes several high-impact action and data reader issues.

Data and Cache Improvements

User-Defined Table Reads

Vista data readers were updated to significantly reduce the risk of timeouts when retrieving User-Defined (UD) table data. Previously, a single database connection was held open for the entire retrieval process. The system now uses shorter, individual connections for specific tasks.

Australian Region

The Vista API was validated for the Australian region, including cache write and update actions.

API Improvements

Module	Change Type	Data Object	Description
JC	Added	Contract Headers	Added the Add action for Contract Headers to allow programmatically creating new job cost contract header records.
JC	Added	Contract Headers	Added the Change action for Contract Headers to allow programmatically updating existing job cost contract header records.
JC	Added	Contract Items	Added the Add action for Contract Items to allow programmatically creating schedule-of-values / bid item lines on an existing contract.
JC	Added	Contracts Forecast Cache	Added a new data object for JC Contracts Forecast to support the cache writer service.
PM	Added	Firm Contacts Cache	Added a new data object for PM Firm Contacts to support the cache writer service.
PO	Added	Purchase Order Batch Entries	Added the Change action for purchase order batch entries to enable updating posted purchase orders.
PR	Added	Leave Codes	Added the Change action for Payroll Leave Codes.
SM	Added	Service Sites Headers	Added a headers-only data object for service sites to prevent cache write errors caused by large records.
AP	Fixed	Pay Batch Entries Add Action	Added the missing `CMRefSeq` input field to the action schema to prevent batch entry creation failures.
AP	Fixed	Payment Batch Entries Add Action	Updated the Add action schema so Expense Month and Transaction Number are required, and `InvTotal` is included where applicable, to avoid transaction-not-found errors.
HR	Fixed	Resources Add Action	Added the missing `ExistsInPR` input field to the action schema to prevent resource creation issues and downstream payroll benefit processing problems.
JC	Fixed	Contracts Add Action	Fixed the action to default the `Mth` field to the start of the accounting month to prevent filtering issues.
JC	Fixed	Contract Classification Entries Add Action	Fixed `contract_cls_entries/add` so it creates both the contract-level and corresponding job-level rows in JCXB.
JC	Fixed	Cost Projection Batches Add Action	Fixed Cost Projection Batch Add so it creates the expected default projection line in JCPB, enabling subsequent Change Projection batch entry updates.
JC	Fixed	Cost Projection Batches Add Action	Resolved execution timeouts on `proj_batches/add` for certain jobs by improving projection batch entry creation performance.
—	Fixed	Data Readers	Fixed an issue where changes to user-defined fields unexpectedly triggered change detection and caused excessive change events.
—	Enhanced	Action Descriptions	Corrected spelling and wording in Vista action descriptions and restored intentional Vista UI mnemonic text that had been over-corrected.
JC	Enhanced	Contracts	Updated Contracts data object descriptions for improved clarity.

Schema Clarifications

Module	Change Type	Data Object	Description
AP	Enhanced	Invoices Cache	Clarified `OpenYN`, `InPayControl`, and `Purge` field descriptions on the AP invoices cache schema to better reflect native Vista `bAPTH` column behavior.

Not Yet Released

Module	Change Type	Data Object	Description
JC	Added	Contract Items	Change action for Contract Items — not yet released.