Message type: E = Error
Message class:  OIU_MASS_UPLOAD - Message class for Mass Upload 
Message number: 030
Message text: Required field 'Delivery Network Type Code' not entered.
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message OIU_MASS_UPLOAD030 indicates that a required field, specifically the 'Delivery Network Type Code', has not been filled in during a mass upload process. This error typically occurs in the context of data uploads related to Oil and Gas (OIU - Oil Industry Utility) or similar modules where specific fields are mandatory for the successful processing of data.
Cause: The error is triggered when the system detects that the 'Delivery Network Type Code' field, which is essential for the transaction or data entry being performed, is missing. This can happen due to: Incomplete Data Preparation: The data file being uploaded may not have the required field populated. Incorrect Mapping: The mapping of fields in the upload template may not align with the expected fields in SAP. Data Validation Rules: The system has validation rules that require certain fields to be filled out before processing.
Solution: To resolve this error, you can take the following steps: Check
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
OIU_MASS_UPLOAD029 Required field 'Delivery Network Group' not entered.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIU_MASS_UPLOAD028 Required field 'Delivery Network Description' not entered.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIU_MASS_UPLOAD031 Required field 'Delivery Network Hierarchy Group' not entered.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
OIU_MASS_UPLOAD032 Required field 'Country' not entered.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.