Why does error G27 occurs in SWIFT MT300 message?

 Error G27 in a SWIFT MT300 message typically occurs when there is an issue with the formatting or content of the message. It indicates that the sender has not provided the required information or has provided incorrect information in the message.

The specific cause of the G27 error can vary depending on the context and specific requirements of the message. However, some common reasons for this error include:

1. Missing or incorrect mandatory fields: The MT300 message has specific mandatory fields that must be included and populated correctly. If any of these fields are missing or contain incorrect data, the G27 error may occur.

2. Invalid formatting: The message must adhere to the SWIFT message standards, including proper field formatting and alignment. If the message structure or formatting is incorrect, it can trigger the G27 error.

3. Inconsistent or conflicting data: The content of the message should be consistent and accurate. If there are inconsistencies or conflicts in the data provided, such as mismatched amounts or dates, the G27 error can occur.

To resolve the G27 error, the sender needs to review and correct the message based on the specific requirements and guidelines for the MT300 message. This may involve verifying the presence and accuracy of mandatory fields, ensuring proper formatting, and reconciling any conflicting or inconsistent data.

It's important to note that the exact resolution may vary depending on the specific circumstances and requirements of the message. In case of persistent issues or difficulties in resolving the error, it is advisable to consult the SWIFT user documentation, contact SWIFT support, or seek assistance from experienced SWIFT professionals.