Purchase-related transaction codes are mapped to the nature of transaction. This topic lists the transaction codes with the corresponding natures of transaction.
| Transaction Code | Type of Transaction | Nature of transaction | 
| 10 | Purchases within state from TIN holder | Purchase - Taxable, Purchase - Works Contract, Labour Charges Paid, Purchase - Zero Rated, Purchase From Composition Dealer, Purchase Tax Free, Purchase Exempt | 
| 15 | Purchases within state from TIN holder (Capital Assets) | Purchase Taxable - Capital Goods | 
| 90 | Purchase Goods Return for transaction types 10, and 15 | 
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| 95 | Purchase debit note for transaction types 10, and 15 | 
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| 20 | Purchases within state from Non-TIN holder (URD) | Purchase From Unregistered Dealer | 
| 91 | Purchase Goods Return (within the state URD) for transaction type 20 | 
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| 96 | Purchase Debit Note (within the state URD) for transaction type 20 | 
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| 30 | Interstate Branch Transfer/Consignment Purchases | Interstate Branch Transfer Inward, Interstate Consignment Transfer Inward | 
| 31 | Purchase Goods Return (Inter-state branch transfer) for transaction type 30 | Interstate Branch Transfer Inward, Interstate Consignment Transfer Inward | 
| 32 | Purchase Debit Note (Inter-state branch transfer) for transaction type 30 | Interstate Branch Transfer Inward, Interstate Consignment Transfer Inward | 
| 35 | Branch transfer within the State | Branch Transfer Inward, Consignment Transfer Inward | 
| 36 | Purchase Goods Return (within state branch transfer) for transaction type 35 | Branch Transfer Inward, Consignment Transfer Inward | 
| 37 | Purchase Debit Note (within state branch transfer) for transaction type 35 | Branch Transfer Inward, Consignment Transfer Inward | 
| 40 | Inter-State Purchases against Form-C | Interstate Purchase - Against Form C | 
| 41 | Purchase Goods Return (interstate purchases against Form-C ) for transaction type 40 | Interstate Purchase - Against Form C | 
| 42 | Purchase Debit Note (interstate purchases against Form-C ) for transaction type 40 | Interstate Purchase - Against Form C | 
| 45 | Purchases against Form-C within the state (Purchase in transit u/s 6(2)) | Interstate Purchase - E1, Interstate Purchase - E2 | 
| 46 | Purchase Goods Return (purchases against Form-C within the state) for transaction type 45 | Interstate Purchase - E1, Interstate Purchase - E2 | 
| 47 | Purchase Debit Note (purchases against Form-C within the state) for transaction type 45 | Interstate Purchase - E1, Interstate Purchase - E2 | 
| 50 | Inter-State Purchases against Form-H | Interstate Purchase Deemed Export | 
| 51 | Purchase Goods Return (inter state purchases against Form-H ) for transaction type 50 | Interstate Purchase Deemed Export | 
| 52 | Purchase Debit Note (inter state purchases against Form-H ) for transaction type 50 | Interstate Purchase Deemed Export | 
| 55 | Purchases against H Form within state | Purchase Deemed Export | 
| 56 | Purchase Goods Return (purchases against H Form within state) for transaction type 55 | Purchase Deemed Export | 
| 57 | Purchase Debit Note (purchases against H Form within state) for transaction type 55 | Purchase Deemed Export | 
| 60 | Imports (Direct) | Imports | 
| 61 | Purchase Goods Return (Direct Import ) for transaction type 60 | Imports | 
| 62 | Purchase Debit Note (Direct Import) for transaction type 60 | Imports | 
| 65 | Imports (High Seas) | Purchase High Seas | 
| 66 | Purchase Goods Return (High Seas) for transaction type 65 | Purchase High Seas | 
| 67 | Purchase Debit Note (High Seas) for transaction type 65 | Purchase High Seas | 
| 70 | Inter-State Purchases without Form | Interstate Purchase - Taxable | 
| 71 | Purchase Goods Return (inter-state purchases without form) for transaction type 70 | Interstate Purchase - Taxable | 
| 72 | Purchase Debit Note (inter-state purchases without form) for transaction type 70 | Interstate Purchase - Taxable | 
| 75 | Interstate purchases against Form-I | Interstate Purchase - Zero Rated + Sub Type = Not Applicable OR SEZ / STP / EHTP | 
| 76 | Interstate purchases against Form-I | Interstate Purchase - Zero Rated + Sub Type = Not Applicable OR SEZ / STP / EHTP | 
| 77 | Interstate purchases against Form-I | Interstate Purchase - Zero Rated + Sub Type = Not Applicable OR SEZ / STP / EHTP | 
| 45 | Purchases against Form-C within the state (Purchase in transit u/s 6(2)) | Interstate Purchase Exempt with Form C + Is under CST exemption is No | 
| 46 | Purchase Goods Return (Purchases against Form-C within the state (Purchase in transit u/s 6(2))) for transaction type 45 | Interstate Purchase Exempt with Form C + Is under CST exemption is No | 
| 47 | Purchase Debit Note (Purchases against Form-C within the state (Purchase in transit u/s 6(2))) for transaction type 45 | Interstate Purchase Exempt with Form C + Is under CST exemption? is No | 
| 40 | Interstate Purchases against Form-C | Interstate Purchase Exempt with Form C + Is under CST exemption? is Yes | 
| 41 | Purchase Goods Return (Interstate Purchases against Form-C ) for transaction type 40 | Interstate Purchase Exempt with Form C + Is under CST exemption? is Yes | 
| 42 | Purchase Debit Note (Interstate Purchases against Form-C ) for transaction type 40 | Interstate Purchase Exempt with Form C + Is under CST exemption? is Yes | 
| 75 | Inter-State Purchases against Form-I | Purchase - Zero Rated + Sub Type = SEZ / STP / EHTP | 
| 76 | Purchase Goods Return (Inter-State Purchases against Form-I ) for transaction type 75 | Purchase - Zero Rated + Sub Type = SEZ / STP / EHTP | 
| 77 | Purchase Debit Note (Inter-State Purchases against Form-I ) for transaction type 75 | Purchase - Zero Rated + Sub Type = SEZ / STP / EHTP | 
| Transaction Code | Type of Transaction | Nature of transaction | 
| 100 | Sales to TIN holder (within state or inter-state excluding against Form/Declaration) | Sales - Taxable, Sales Taxable - Ongoing, Sales - Works contract, Sales - Works Contract - Ongoing, Labour Charges Collected, Interstate Sales - Taxable, Sales - Tax Free, Interstate Labour Charges Collected, Sales - Zero Rated, | 
| 200 | Sales to non-TIN holder (within state or interstate) | Sales - Taxable, Sales Taxable - Ongoing, Sales - Works contract, Sales - Works Contract - Ongoing | 
| 600 | Sales Return with Not applicable as Nature of Return . (Sales goods return for transaction types 100, 200, 400, 500, and 800) | Sales - Taxable, Sales Taxable - Ongoing, Sales - Works contract, Sales - Works Contract - Ongoing, Labour Charges Collected, Interstate Sales - Taxable, Sales - Exempt, Interstate Labour Charges Collected, Sales - Zero Rated, | 
| 700 | Credit Note with Change in Consideration , Cash Discount , and Trade Discount as Nature of Return . (Credit Note for transaction types 100, 200,400, 500, and 800) | Sales - Taxable, Sales Taxable - Ongoing, Sales - Works contract, Sales - Works Contract - Ongoing, Labour Charges Collected, Interstate Sales - Taxable, Sales - Tax Free, Interstate Labour Charges Collected, Sales - Zero Rated, Sales - Exempt | 
| 300 | Branch Transfer/ Consignment Transfer (within state or interstate) | Branch Transfer Outward, Consignment Transfer Outward, Interstate Branch Transfer Outward, and Interstate Consignment Transfer Outward | 
| 680 | Sales Return (Branch Transfer/ Consignment Transfer) for transaction type 300. | Branch Transfer Outward, Consignment Transfer Outward, Interstate Branch Transfer Outward, and Interstate Consignment Transfer Outward | 
| 780 | Sales Credit Note (Branch Transfer) for transaction type 300. | Branch Transfer Outward, Consignment Transfer Outward, Interstate Branch Transfer Outward, and Interstate Consignment Transfer Outward | 
| Transaction Code | Type of Transaction | Nature of transaction | 
| 100 | Sales to TIN holder (within state or interstate excluding against Form/Declaration) | Interstate Sales - Taxable, Interstate Sales - Works Contract, Interstate Sales - Tax Free, Interstate Sales - Exempt, Interstate Labour Charges Collected, Interstate Sales - Zero Rated + Sub Type = Not Applicable | 
| 200 | Sales to non-TIN holder (within state or interstate) | Interstate Sales - Taxable, Interstate Sales - Works Contract | 
| 600 | Sales Return with Not applicable as Nature of Return . (Sales goods return for transaction types 100, 200, 400, 500, 800, and 900) | Interstate Sales - Zero Rated + Sub Type = Not Applicable, Interstate Sales - Taxable, Interstate Sales - Works Contract, Interstate Sales - Tax Free, Interstate Sales - Exempt, Interstate Labour Charges Collected, Interstate Sales - Against Form C, Interstate Sales Exempt with Form C + Is under CST exemption is Yes | 
| 700 | Credit Note with Change in Consideration , Cash Discount , and Trade Discount as Nature of Return . (Credit Note for transaction types 100, 200, 400, 500, and 900) | Interstate Sales - Zero Rated + Sub Type = Not Applicable, Interstate Sales - Taxable, Interstate Sales - Tax Free, Interstate Sales - Exempt, Interstate Labour Charges Collected, Interstate Sales - Against Form C, Interstate Sales - Works Contract, Interstate Sales Exempt with Form C + Is under CST exemption is Yes | 
| 900 | Sales against Form C | Interstate Sales - Against Form C, Interstate Sales Exempt with Form C + Is under CST exemption is Yes | 
| 300 | Branch Transfer/ Consignment Transfer (within state or interstate) | Interstate Branch Transfer Outward, Interstate Consignment Transfer Outward | 
| 680 | Sales Return (Branch Transfer/Consignment) for transaction type 300 | Interstate Branch Transfer Outward, Interstate Consignment Transfer Outward | 
| 780 | Sales Credit Note (Branch Transfer) for transaction type 300 | Interstate Branch Transfer Outward, Interstate Consignment Transfer Outward | 
| 920 | Sales in transit | Interstate Sales - E1, Interstate Sales - E2, Interstate Sales Exempt - E1, Interstate Sales Exempt with Form C + Is under CST exemption is No | 
| 620 | Sales Goods Return (sales in transit) for transaction type 920 | Interstate Sales - E1, Interstate Sales - E2, Interstate Sales Exempt - E1, Interstate Sales Exempt with Form C + Is under CST exemption is No | 
| 720 | Sales Credit Note (sales in transit) for transaction type 920 | Interstate Sales - E1, Interstate Sales - E2, Interstate Sales Exempt - E1, Interstate Sales Exempt with Form C + Is under CST exemption is No | 
| 930 | Inter-state sales to consulate | Interstate Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid | 
| 630 | Sales Goods Return (consulate) for transaction type 930 | Interstate Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid | 
| 730 | Sales Credit Note (consulate) for transaction type 930 | Interstate Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid Sales - Zero Rated + Sub Type: Diplomatic Missions, U.N, UNICEF, WHO & Foreign Aid | 
| 940 | Export against Form H | Deemed Export, Interstate Deemed Export | 
| 640 | Sales Goods Return (export against Form - H) for transaction type 940 | Deemed Export, Interstate Deemed Export | 
| 740 | Sales Credit Note (export against Form - H) for transaction type 940 | Deemed Export, Interstate Deemed Export | 
| 950 | Direct Export | Exports | 
| 650 | Sales Goods Return (Direct Export) for transaction type 950 | Exports | 
| 750 | Sales Credit Note (Direct Export) for transaction type 950 | Exports | 
| 960 | Import Sales (High Seas) | Sales High Seas | 
| 660 | Sales Goods Return (sale in the course of Import) for transaction type 960 | Sales High Seas | 
| 760 | Sales Credit Note (sale in the course of Import) for transaction type 960 | Sales High Seas | 
| 970 | Interstate Sales u/s 8(6), Form-I | Interstate Sales - Zero Rated + Sub Type: SEZ/STP/EHTP | 
| 670 | Sales Goods Return (sales against u/s 8(6)) for transaction type 970 | Interstate Sales - Zero Rated + Sub Type: SEZ/STP/EHTP | 
| 770 | Sales Credit Note (sales against u/s 8(6)) for transaction type 970 | Interstate Sales - Zero Rated + Sub Type: SEZ/STP/EHTP |