Acumatica Config-as-Code

acu configures Acumatica ERP from YAML files in a git repo.

No UI clicks, no Configuration Wizard.

How it works

1. Read the target Acumatica deployment and translate its configuration into YAML — config as code.
2. Develop changes in the YAML, in git: edit, review, version.
3. Re-deploy with acu apply, then prove the live tenant matches the code with acu diff.

Three commands do the work, and every one is safe to re-run:

• acu tenant create — creates a tenant and bootstraps it in one step, ready for apply. Re-running it against an existing tenant republishes the bootstrap package instead of failing.
• acu apply — pushes your YAML into the tenant as keyed upserts. Running it twice changes nothing.
• acu diff — compares your YAML against the live tenant and exits with code 2 on drift.

Tested against Acumatica ERP 26.101.0225 on Windows Server 2025, contract REST endpoint 25.200.001. Other versions will likely work, but only this combination is verified.

Why

Acumatica configuration normally lives in the web UI: wizards, screens, and manual data entry that nobody can review, version, or reproduce.

acu moves that configuration into YAML files in a git repo, so a tenant can be rebuilt from scratch, audited in a pull request, and checked for drift like any other infrastructure.

Quick start

uv tool install acumatica-cli

acu config init --host erp.example.com my-erp
cd my-erp                                # edit .env: set ACU_PASSWORD

acu config check                         # read-only preflight
acu tenant create --id 3 --login DEV     # create the tenant + bootstrap it
acu --tenant DEV apply                   # seed bootstrap/, baseline/, setup/
acu --tenant DEV diff                    # prove zero drift (exit 2 on drift)

CLI map

acu [--tenant NAME] [--url URL] [--ssh USER@HOST] [--api-version V]
    [--username U] [--password P]
│
├── tenant                            tenant CRUD (ac.exe over SSH — control plane)
│   ├── list                          CompanyID, sign-in name, internal CD, type
│   ├── create --id N --login NAME    create + bootstrap; re-run to republish
│   │          [--type SalesDemo] [--parent N] [--hidden] [--no-init]
│   └── delete --id N [--yes]         delete the tenant and its data, recycle app pool
│
├── apply [--dry-run] [FILES...]      push YAML via REST (idempotent PUT upserts)
├── diff  [FILES...]                  drift check vs the live tenant (exit 2 on drift)
├── schema [--out DIR]                dump the endpoint's OpenAPI schema (swagger.json)
│
└── config                            configuration ops
    ├── init [--host HOST] [DIR]      scaffold a data repo (.env plus example YAML)
    ├── show                          print the resolved config as a complete .env
    └── check                         read-only preflight: discovery, secrets, REST, SSH

apply and diff called without FILES default to the scaffolded directories, in order: bootstrap/, then baseline/, then setup/. Run acu <command> --help for details on any command.

The data repo

Your configuration lives in its own git repo, which acu config init scaffolds:

Path	What it holds
bootstrap/	what makes a virgin tenant configurable: features, company, credit terms
baseline/	reference data: subaccounts, chart of accounts, ledger, units of measure
setup/	one-time actions: financial year, master calendar, open periods
.env	where to apply and who signs in, every key an ACU_* variable

Files in each directory apply alphabetically; the numbered prefixes (10-, 20-, and so on) encode dependency order. The scaffolded .gitignore keeps .env out of git — store it encrypted (for example as .env.gpg) and decrypt once per clone.

Installation

Requires Python 3.12 or newer.

uv tool install acumatica-cli

pipx install acumatica-cli and pip install acumatica-cli work too. For the latest development version straight from the main branch:

uv tool install git+https://github.com/kborovik/acumatica-cli.git

Verify with acu --version.

Configuration

Everything lives in one .env file: where to apply and who signs in. Three values are required; everything else has a code default matching a stock Acumatica install:

ACU_BASE_URL=http://acu-dev1.vm.internal/AcumaticaERP  # required: REST root
ACU_TENANT=LAB5                                        # sign-in name of the tenant API sessions use
ACU_SSH=Administrator@acu-dev1.vm.internal             # required: control-plane user@host
ACU_USER=admin                                         # optional, defaults to admin
ACU_PASSWORD=...                                       # required

Worth knowing:

• The file is found by walking up from the current directory, so any subdirectory of the data repo works. Without a .env, global flags plus the process environment supply the full configuration.
• Nothing is derived: split-horizon DNS, port forwards, and jump hosts are all handled by writing the address you actually want into the two address keys.
• acu config show prints the fully resolved configuration as a complete, valid .env — every knob visible, the password excluded. Redirect it to turn resolved state into a working config: acu config show > .env.

Verify before touching anything live:

acu config check       # read-only preflight: discovery, secrets, REST, SSH
acu apply --dry-run    # show what would be written, write nothing

Control and Data Planes

acu talks to an instance over two independent channels:

• Control plane (SSH): acu tenant runs ac.exe -cm:CompanyConfig and sqlcmd on the Windows guest — see docs/ac-exe.md.
• Data plane (REST): acu apply, diff, and schema use the contract-based API (/entity/Default/25.200.001/), where PUT is a keyed upsert — see docs/rest-api.md.

If you only apply and diff YAML, you never need SSH. SSH setup is required only for acu tenant.

SSH setup (control plane)

acu tenant runs commands on the Windows guest through plain ssh. Two things about this setup are not obvious, and both are hard requirements.

1. The default SSH shell on the Windows guest must be PowerShell. acu sends PowerShell syntax over the wire, and every one of those commands fails under cmd.exe, the Windows OpenSSH default. Switch it once, in an elevated PowerShell on the guest:

New-ItemProperty -Path "HKLM:\SOFTWARE\OpenSSH" -Name DefaultShell `
  -Value "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" `
  -PropertyType String -Force

2. Authentication must be key-based and non-interactive. acu connects with BatchMode=yes, so it will never answer a password prompt. Because the default user is Administrator (an administrators-group member), Windows OpenSSH reads the key from the machine-wide file C:\ProgramData\ssh\administrators_authorized_keys — not from ~\.ssh\authorized_keys like on Linux. On the guest:

Install + start the server (once):

Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0
Set-Service sshd -StartupType Automatic
Start-Service sshd

Authorize your public key for administrators:

Add-Content -Path C:\ProgramData\ssh\administrators_authorized_keys -Value "ssh-ed25519 AAAA... you@laptop"

The file must be readable by SYSTEM/Administrators only, or sshd ignores it:

icacls C:\ProgramData\ssh\administrators_authorized_keys /inheritance:r /grant "Administrators:F" /grant "SYSTEM:F"

Then verify from your workstation — this one test proves both requirements at once (key auth works, and the shell is PowerShell):

ssh -o BatchMode=yes Administrator@acu-dev1.vm.internal '$PSVersionTable.PSVersion'