Message type: E = Error
Message class:  /SAPAPO/MSDP_DIS -  
Message number: 018
Message text: 'Fix.Transprt' indicator different for loc.prod.&1 &2 and header &3 &4
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 /SAPAPO/MSDP_DIS018 indicates a discrepancy between the "Fix.Transprt" indicator settings for a location product and its corresponding header in the Advanced Planning and Optimization (APO) module. This error typically arises in the context of transportation planning or when dealing with location-specific product data.
Cause: The error occurs when the "Fix.Transprt" indicator (which determines whether transportation planning is fixed or flexible) is set differently for the location product and the header. This inconsistency can lead to issues in planning and execution, as the system expects these indicators to align for proper processing.
Solution: To resolve this error, you need to ensure that the "Fix.Transprt" indicator is consistent between the location product and the header. Here are the steps you can take: Check the Settings: Go to the location product master data and check the "Fix.Transprt" indicator. Go to the header data (e.g., the transportation lane or planning book) and check the same indicator. Align the Indicators: If
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SAPAPO/MSDP_DIS017 Planning book must be specified for the 'Aggregated Planning' model check
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/MSDP_DIS016 Transportation lane &1->&2, &3 for &4 does not exist at product level
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/MSDP_DIS019 'Fix.Productn' indicator different for loc.prod.&1 &2 and header &3 &4
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SAPAPO/MSDP_DIS020 Select Planning Book and Data View
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.