The maximum weight in Mb per transfer information package is 700 Mb. However, to avoid performance problems, limits have been established depending on the type of operation used on the entry web service or on the reference web.
The following table indicates the established limits:
| Type or method of income | Maximum allowed weight |
| For the reference website | 700 Mb |
| For WS (PIT entry with documents in B64. Online mode) | 5 Mb |
| For WS (PIT entry with references to documents located within a ZIP file. Online mode) | 10 Mb |
| For WS (PIT entry with documents in B64. Offline mode) | 50 Mb |
| For WS (PIT entry with references to documents located within a ZIP file. Offline mode) | 200 Mb |
| For WS (PIT entry with references to documents previously sent to a direct loading service) | 700 Mb |

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