Customize Field
Consider the message format MT101.
Status | Tag | Field Name | Content/Options | No. |
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Mandatory Sequence A General Information |
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M | 20 | Sender's Reference | 16x | 1 |
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O | 21R | Customer Specified | 16x | 2 |
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| Reference |
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M | 28D | Message Index/Total | 5n/5n | 3 |
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O | 50a | Instructing Party | C or L | 4 |
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O | 50a | Ordering Customer | G or H | 5 |
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O | 52a | Account Servicing | A or C | 6 |
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| Institution |
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……. |
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……. |
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……. |
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Note that the field 50a appears twice consequently. When such a data format is entered in the designer and validated, the designer shows an error that the field is duplicated. Hence in order to avoid this, the suffix a needs to be changed. Anyhow, this will not affect the format of the field. To change the suffix:
1.Click the Add New SWIFT Field 
button in the External Format - SWIFT UI to bring the Create Field dialog. Or select the row to change the suffix (if the field is already added) and click the Modify SWIFT Field button to bring the Modify Field dialog.
