> For the complete documentation index, see [llms.txt](https://selenium-4.gitbook.io/nexus-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://selenium-4.gitbook.io/nexus-docs/documentation/collateral-allocation-management/operations/main.md).

# Create Collateral Asset Account

## Create Collateral Asset Account

> Creates a collateral asset account for a customer, pledging one or more assets against it.

```json
{"openapi":"3.0.3","info":{"title":"NEXUS Banking Services API","version":"1.0.0"},"tags":[{"name":"collateral-asset-administration"}],"servers":[{"url":"https://sandbox.nexus.selenium.ao","description":"Sandbox"},{"url":"https://api-mock.selenium.ao","description":"Mock"}],"security":[{"bearerAuth":[]}],"components":{"securitySchemes":{"bearerAuth":{"type":"http","scheme":"bearer","description":"Bearer Token (OAuth2 / OIDC or JWT) passed in the `Authorization` header."}},"schemas":{"MonetaryAmount":{"type":"object","description":"Generic monetary amount and currency pair.","properties":{"amountValue":{"type":"number","format":"double","description":"Monetary value."},"amountCurrency":{"type":"object","properties":{"currencyCode":{"type":"string","description":"ISO 4217 currency code."}}}}},"TypedDate":{"type":"object","description":"Date paired with a type/role describing what it represents.","properties":{"dateContent":{"type":"string","format":"date","description":"The date value."},"dateType":{"type":"string","description":"Role of the date (e.g. `MaturityDate`, `RepaymentStartDate`)."}}},"ErrorEnvelope":{"type":"object","properties":{"error":{"$ref":"#/components/schemas/Error"}}},"Error":{"type":"object","required":["status","reason","message","path"],"properties":{"status":{"type":"integer","description":"HTTP status code of the error."},"reason":{"type":"string","description":"High-level error category code."},"message":{"type":"string","description":"Human-readable description of the problem."},"path":{"type":"string","description":"HTTP method and endpoint path that originated the error."},"errordetail":{"type":"array","description":"Detailed error list. May be absent for generic errors (e.g. 500).","items":{"$ref":"#/components/schemas/ErrorDetail"}}}},"ErrorDetail":{"type":"object","properties":{"code":{"type":"string","description":"Domain-specific error code."},"reason":{"type":"string","description":"Textual identifier of the specific cause."},"message":{"type":"string","description":"Detailed message, with concrete values where applicable."}}}},"responses":{"BadRequest":{"description":"The request payload is invalid — inconsistent dates, an amount ≤ 0, an invalid currency, or missing required fields.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"Unauthorized":{"description":"Missing, expired or invalid Bearer Token.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"Forbidden":{"description":"Authenticated, but missing the scope required for this operation.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"NotFound":{"description":"The requested resource could not be found.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"Conflict":{"description":"The resource already exists, or is in a terminal/incompatible state for this operation.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"UnprocessableEntity":{"description":"A business rule was violated (e.g. insufficient balance, currency mismatch, amount exceeds the outstanding balance).","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"InternalServerError":{"description":"Unexpected internal error.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"BadGateway":{"description":"The core banking system is unavailable or returned an invalid response.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}},"GatewayTimeout":{"description":"The call to the core banking system timed out.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorEnvelope"}}}}}},"paths":{"/v1/collateral-asset-administration/create":{"post":{"summary":"Create Collateral Asset Account","description":"Creates a collateral asset account for a customer, pledging one or more assets against it.","tags":["collateral-asset-administration"],"operationId":"createCollateralAssetAccount","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["collateralAssetCustomerReference","collateralAssetAccountReference","collateralAssets"],"properties":{"collateralAssetCustomerReference":{"type":"string","description":"Unique identifier of the customer."},"collateralAssetAccountReference":{"type":"object","description":"Configuration data for the collateral account to be created.","required":["collateralAssetAccountType","collateralAssetAccountProductReference","collateralAssetType","collateralAssetValuationAmount","collateralAssetPledgedDate"],"properties":{"collateralAssetAccountType":{"type":"string","description":"Component code."},"collateralAssetAccountProductReference":{"type":"string","description":"Reference of the associated product."},"collateralAssetType":{"type":"string","description":"Collateral asset type code (see business rules for the full 00-22 code table)."},"collateralAssetValuationAmount":{"allOf":[{"$ref":"#/components/schemas/MonetaryAmount"}],"description":"Value of the collateral."},"collateralAssetPledgedDate":{"allOf":[{"$ref":"#/components/schemas/TypedDate"}],"description":"Maturity date of the collateral pledge."}}},"collateralAssets":{"type":"array","description":"List of assets composing the collateral. Must contain at least one element.","minItems":1,"items":{"type":"object","required":["assetAccountReference","asseValuationAmount","assetValuationDate","assetClassProperties"],"properties":{"assetAccountReference":{"type":"string","description":"Account number of the asset (e.g. a term deposit account number)."},"asseValuationAmount":{"allOf":[{"$ref":"#/components/schemas/MonetaryAmount"},{"type":"object","properties":{"amountType":{"type":"string","description":"Type of amount."}}}],"description":"Value of the asset."},"assetValuationDate":{"allOf":[{"$ref":"#/components/schemas/TypedDate"}],"description":"Valuation date of the asset."},"assetClassProperties":{"type":"object","required":["assetClassType"],"properties":{"assetClassType":{"type":"string","description":"Asset class."},"assetMarketReference":{"type":"string","description":"Reference market of the asset."},"assetQuantity":{"type":"integer","description":"Quantity of securities."},"assetISIN":{"type":"string","description":"ISIN code of the security."},"assetDossier":{"type":"string","description":"Reference of the dossier associated with the asset."}}}}}}}}}}},"responses":{"200":{"description":"Collateral asset account created successfully.","content":{"application/json":{"schema":{"type":"object","properties":{"CollateralAssetReference":{"type":"object","properties":{"collateralAssetAccountIdentification":{"type":"object","properties":{"collateralAssetAccountIdentifierValue":{"type":"string","description":"Number of the collateral account created in the system."}}},"CollateralAssetStatus":{"type":"string","description":"Current status of the collateral account."}}}}}}}},"400":{"$ref":"#/components/responses/BadRequest"},"401":{"$ref":"#/components/responses/Unauthorized"},"403":{"$ref":"#/components/responses/Forbidden"},"404":{"$ref":"#/components/responses/NotFound"},"409":{"$ref":"#/components/responses/Conflict"},"422":{"$ref":"#/components/responses/UnprocessableEntity"},"500":{"$ref":"#/components/responses/InternalServerError"},"502":{"$ref":"#/components/responses/BadGateway"},"504":{"$ref":"#/components/responses/GatewayTimeout"}}}}}}
```


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