List/search Merit Aktiva customers (POST /api/v1/getcustomers). With no filters returns all customers — can be very large (Merit may even fail to serialize huge lists), so prefer a filter. id wins over all other filters; regNo/vatRegNo match exactly; name matches partially. Dates are ISO YYYY-MM-DD.

Create a Merit Aktiva customer (POST /api/v2/sendcustomer). Name must be unique (max 150). notTDCustomer is required (true for physical persons / foreign companies in EE). countryCode is required (2 chars). Returns { Id, Name }.

Update a Merit Aktiva customer (POST /api/v1/updatecustomer). id is required; other fields are optional patches.

List Merit Aktiva customer groups (POST /api/v2/getcustomergroups). No filters.

Create a Merit Aktiva customer group (POST /api/v2/sendcustomergroup). id (GUID), name (max 64), and code (max 20) are required.

List/search Merit Aktiva vendors (POST /api/v1/getvendors). With no filters returns all vendors — can be very large, so prefer a filter. id wins over other filters; regNo/vatRegNo match exactly; name matches partially. Dates are ISO YYYY-MM-DD.

Create a Merit Aktiva vendor (POST /api/v2/sendvendor). Name must be unique (max 150). vatAccountable and countryCode are required. Returns { Id, Name }.

Update a Merit Aktiva vendor (POST /api/v2/updatevendor). id is required; other fields are optional patches. v2 supports Dimensions.

List Merit Aktiva vendor groups (POST /api/v2/getvendorgroups). No filters.

Create a Merit Aktiva vendor group (POST /api/v2/sendvendorgroup). id (GUID), name (max 64), and code (max 20) are required.

List Merit Aktiva sales invoices for a period (POST /api/v2/getinvoices). periodStart/periodEnd are ISO YYYY-MM-DD and may be at most 3 months apart (Merit rejects longer periods). dateType: 0 = document date (default), 1 = changed date.

List Merit Aktiva sales invoices filtered by invoice number and/or customer (POST /api/v2/getinvoices2). Provide invoiceNo, customerName, or customerId; no period needed. Useful for finding a specific invoice's GUID (SIHId).

Get one Merit Aktiva sales invoice with rows and payments (POST /api/v2/getinvoice). id is the invoice GUID (SIHId from the list tools). Set addAttachment to include the invoice PDF as base64 (large).

Create a Merit Aktiva sales invoice (POST /api/v2/sendinvoice). Invoices cannot be updated — delete and recreate. Credit invoice: use negative quantity and totalAmount. customer may be an existing Id or a new record (name + notTDCustomer + countryCode). invoiceRows, taxAmount[], and totalAmount (ex-VAT) are required. Dates are ISO YYYY-MM-DD.

SENDS EMAIL: email a Merit Aktiva sales invoice to the customer (POST /api/v2/sendinvoicebyemail). id is the invoice GUID (SIHId). Set delivNote to send a delivery note without prices.

SENDS E-INVOICE: send a Merit Aktiva sales invoice as an e-invoice (POST /api/v2/sendinvoiceaseinv). id is the invoice GUID (SIHId). Receiver not capable returns api-noeinv. Set delivNote to send without prices.

Get a Merit Aktiva sales invoice PDF as base64 (POST /api/v2/getsalesinvpdf). Returns FileName + FileContent. Set delivNote for a delivery note without prices.

DESTRUCTIVE: delete a Merit Aktiva sales invoice (POST /api/v1/deleteinvoice). id is the invoice GUID (SIHId). There is no undo.

List the Merit Aktiva chart of accounts (POST /api/v1/getaccounts). usageFilter: 0 or omitted = all accounts, 1 = cost accounts, 2 = cost contra-accounts, 3 = purchase VAT accounts.

List Merit Aktiva payments for a period (POST /api/v2/getpayments). periodStart/periodEnd are ISO YYYY-MM-DD, max 3 months apart. Response Direction: 1 = customer transactions, 2 = vendor, 3 = other income, 4 = other expenses. dateType: 0 = document date, 1 = changed date.

List Merit Aktiva payment types (POST /api/v2/getpaymenttypes). type is required: 1 = purchases, 2 = expense reports, 3 = sales.

Record a payment against a sales invoice (POST /api/v2/sendpayment). Identify the invoice with customerName + invoiceNo. Provide bankId or IBAN (IBAN must match a payment method). paymentDate is ISO YYYY-MM-DD. Partial payments are allowed.

Record a payment for a purchase invoice (POST /api/v2/sendPaymentV). Identify the bill with vendorName + billNo. paymentDate is ISO date or datetime and is sent as yyyyMMddHHmm (Merit's documented format for this endpoint).

Record a payment against a sales offer (POST /api/v2/sendPaymentO). Identify the offer with customerName + offerNo. paymentDate is ISO date or datetime and is sent as yyyyMMddHHmm (Merit's documented format for this endpoint).

DESTRUCTIVE: delete a Merit Aktiva payment (POST /api/v1/deletepayment). id is the payment GUID. There is no undo.

List all Merit Aktiva tax (VAT) rates (POST /api/v1/gettaxes). No filters. Returns Id (the TaxId GUID used on invoice rows), Code, Name, and TaxPct.

List Merit Aktiva purchase invoices for a period (POST /api/v2/getpurchorders). periodStart/periodEnd are ISO YYYY-MM-DD, max 3 months apart. dateType: 0 = document date, 1 = changed date. Distinct from merit_list_purchase_orders (waiting-approval).

Get one Merit Aktiva purchase invoice with rows and payments (POST /api/v2/getpurchorder). id is the purchase invoice GUID (PIHId). Set skipAttachment to omit the PDF (smaller response).

List Merit Aktiva purchase orders waiting approval (POST /api/v2/GetPOrders). Not the same as booked purchase invoices (getpurchorders). dateFilter: 0 = off, 1 = document date, 2 = created date. statusFilter: 0 = off.

Create a booked Merit Aktiva purchase invoice (POST /api/v2/sendpurchinvoice). Creates the document and GL entry immediately — bypasses the approval flow (use sendpurchorder for that; not in this package yet). vendor is existing Id or new record. invoiceRows, taxAmount[], and totalAmount (ex-VAT) are required.

DESTRUCTIVE: delete a Merit Aktiva purchase invoice (POST /api/v1/deletepurchinvoice). id is the purchase invoice GUID (PIHId). There is no undo.

List Merit Aktiva general-ledger batches (POST /api/v1/getglbatches). periodStart/periodEnd are ISO YYYY-MM-DD, max 3 months apart. dateType: 0 = document date, 1 = changed date.

Get one Merit Aktiva GL batch with entries (POST /api/v1/getglbatch). id is the batch GUID (GLBId). Set addAttachment to include a file as base64.

List Merit Aktiva GL batches with entries and cost allocations in one call (POST /api/v1/GetGLBatchesFull). Period max 31 days. withLines/withCostAlloc default off when omitted.

Create a Merit Aktiva general-ledger batch (POST /api/v1/sendglbatch). entryRows need accountCode plus debit and/or credit. batchDate is ISO YYYY-MM-DD.

List/search Merit Aktiva items (POST /api/v1/getitems). id wins over other filters; code and description are broad (partial) matches. usage: 1 = sales, 2 = purchases, 3 = both. type: 1 = stock, 2 = service, 3 = item. locationCode adds inventory qty.

List Merit Aktiva item groups (POST /api/v2/getitemgroups). No filters.

Create Merit Aktiva items (POST /api/v2/senditems). Each item needs type (1 stock, 2 service, 3 item), usage (1 sales, 2 purchases, 3 both), code, and description. uomName is required for stock items. Returns [{ ItemId, Code }].

Update a Merit Aktiva item (POST /api/v1/updateitem). id is required; other fields are optional patches.

Create Merit Aktiva item groups (POST /api/v2/senditemgroups). Each group needs code and name.

List Merit Aktiva projects (POST /api/v1/getprojects). No filters. Returns Code, Name, EndDate.

List Merit Aktiva cost centers (POST /api/v1/getcostcenters). No filters.

List Merit Aktiva dimensions and their values (POST /api/v2/getdimensions). Set allValues to include inactive/ended values.

List Merit Aktiva departments (POST /api/v1/getdepartments). No filters.

List Merit Aktiva units of measure (POST /api/v1/getunits). No filters.

List Merit Aktiva banks / payment methods (POST /api/v1/getbanks). No filters.

List Merit Aktiva accounting periods / financial years (POST /api/v2/getaccperiods). No filters.

Customer debts report (POST /api/v1/getcustdebtrep). Provide customerName (empty string = all customers) or customerId. overDueDays filters exceeded days; debtDate defaults to today when omitted.

Customer payments report (POST /api/v2/getcustpaymrep). Paginated via HasMore/Id4More; this tool follows getmoredata automatically. periodStart/periodEnd required. Note the wire typo CurrncyCode.

Income statement / P&L (POST /api/v1/getprofitrep). endDate is ISO YYYY-MM-DD; periodCount is the number of months back. Optional departmentFilter.

Balance sheet / statement of financial position (POST /api/v1/getbalancerep). endDate is ISO YYYY-MM-DD; periodCount is the number of months.

Inventory report (POST /api/v2/getinventoryreport). reportDate is ISO YYYY-MM-DD.

Sales report (POST /api/v2/getsalesrep). reportType: 1 = invoices, 2 = customers, 3 = articles, 4 = countries, 5 = countries general.

Purchase report (POST /api/v2/getpurchrep). reportType: 1 = invoices, 2 = vendors, 3 = articles, 4 = fixed assets.

List Merit Aktiva sales offers (POST /api/v2/getoffers). periodStart/periodEnd are ISO YYYY-MM-DD and may be at most 3 months apart. dateType: 0 = document date, 1 = changed date. DocType: 1 = quote, 2 = order, 3 = prepayment. DocStatus: 1 = created, 2 = sent, 3 = approved, 4 = rejected, 5 = comment received, 6 = invoice created, 7 = canceled.

Get one Merit Aktiva sales offer with rows (POST /api/v2/getoffer). id is the offer GUID.

Create a Merit Aktiva sales offer (POST /api/v2/sendoffer). offerNo, customer, offerRows, taxAmount[], and totalAmount (ex-VAT) are required. docType: 1 = quote, 2 = order, 3 = prepayment. Dates are ISO YYYY-MM-DD.

Update a Merit Aktiva sales offer (POST /api/v2/updateoffer). offerNo identifies the offer; deliveryDate, hComment, and fComment are the writable fields.

Change a Merit Aktiva sales offer status (POST /api/v2/setofferstatus). newStatus: 1 = unsent, 2 = sent, 3 = confirmed, 4 = rejected, 5 = commented (comment required), 7 = canceled.

Create a sales invoice from a Merit Aktiva sales offer (POST /api/v2/offer2inv). id is the offer GUID. Returns InvoiceId / InvoiceNo.

List Merit Aktiva recurring invoices (POST /api/v2/getperinvoices). The period is the next-invoice date and may be at most 180 days. dateType: 0 = next invoice date, 1 = changed date.

Get one Merit Aktiva recurring invoice with rows (POST /api/v2/getperinvoice). id is the recurring-invoice GUID.

Create a Merit Aktiva recurring invoice (POST /api/v2/sendperinvoice). cycle: 1 = month, 2 = quarter, 3 = year, 4 = week. period: 2 = current, 3 = next, 4 = for the next, 5 = previous, 6 = current less cycles. Dates are ISO YYYY-MM-DD.

List client addresses for open Merit Aktiva recurring invoices (POST /api/v2/getpershaddress). No filters. Empty when none are open.

Send meter / indication values for recurring invoices (POST /api/v1/sendindvalues). artCode is the article; each value may set endValue or quantity (quantity wins) plus address or customerId.

List Merit Aktiva stock locations (POST /api/v2/getlocations). No filters. Returns Code, Name, and next document numbers per movement type.

List Merit Aktiva inventory movements (POST /api/v2/getinvmovements). periodStart/periodEnd are ISO YYYY-MM-DD, max 3 months apart. dateType: 0 = document date, 1 = changed date. Type: 1 = in, 2 = out, 3 = between stocks.

Create a Merit Aktiva inventory movement (POST /api/v2/SendInvMovement). type: 1 = in (itemUnitCost required on rows), 2 = out, 3 = between stocks (location2Code is the destination). Dates are ISO YYYY-MM-DD.

List Merit Aktiva fixed-asset locations (POST /api/v2/getfalocations). No filters.

List Merit Aktiva fixed-asset responsible employees (POST /api/v2/getfaresppersons). No filters.

List Merit Aktiva fixed assets (POST /api/v2/getfixassets). No filters.

Create Merit Aktiva fixed assets (POST /api/v2/sendfixedassets). Each asset needs inventoryNo and name. deprCalcMethod: 1 = linear, 3 = residual, 4 = one-copy (PL). Wire fields keep Merit's documented spellings (InventaryNo, FAFroupName).

List Merit Aktiva sales prices (POST /api/v2/getprices). No filters.

Get the valid sales price for a customer on a date (POST /api/v2/getprice). itemCode and docDate are required; provide customerId, or custName / custRegNo.

Create or replace Merit Aktiva sales prices (POST /api/v2/sendprices). targetGroup: 0 = campaign, 1 = customer, 2 = customer group.

List Merit Aktiva sales discounts (POST /api/v2/getdiscounts). No filters.

Create or replace Merit Aktiva sales discounts (POST /api/v2/senddiscounts). targetGroup: 1 = customer, 2 = customer group. groupType: 1 = item, 2 = item group.