
According to the provisions established in the current DIAN Technical Annex, the system works correctly when it does not allow the generation of the acknowledgment, as the referenced invoice does not correspond to a “Credit (2) type invoice".
The technical requirement specifies that only invoices with the payment method Credit (2) may be registered in RADIAN and, therefore, are eligible for the generation of electronic events.
Invoices with the payment method Cash (1) do not apply to this process, as they do not meet the conditions required for acknowledgments or events in RADIAN.
In XML terms, the validation corresponds to the following node:
Code 1: Cash
Code 2: Credit

Validation in the Gosocket Portal
You can confirm the cause of the rejection by navigating to: Gosocket → Inbox → Received (Recibidos)
Into the ETD preview, you will find the detailed reason why the acknowledgment is not generated, under the Notes section.
The system will display messages such as:
- “The referenced invoice is not of credit type, PaymentMeansID = 2.”
- Rule LGC62 – Rejection: "The referenced invoice is not of credit type, PaymentMeansID = 2".

Conclusion
Upon reviewing the document’s XML, it was verified that the invoice contains: PaymentMeansID = 1 (Cash)
Therefore, the generation of an acknowledgment does not apply, as only invoices with the Credit (2) payment method meet the requirements for processing through RADIAN’s electronic events.
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